Home / 12,281,715.40-18,422,573.10-7,498,746.40

Finding the Fourth Proportional to 12,281,715.40, 18,422,573.10 and 7,498,746.40

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Solution

The fourth proportional to 12,281,715.40, 18,422,573.10 and 7,498,746.40 is: 11,248,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281,715.40 : 18,422,573.10 = 7,498,746.40 : x
  2. Step 2: Convert to fraction form
    12,281,715.40/18,422,573.10 = 7,498,746.40/x
  3. Step 3: Cross multiply
    12,281,715.40x = 18,422,573.10 × 7,498,746.40
  4. Step 4: Simplify right side
    12,281,715.40x = 138,146,203,712,361.86
  5. Step 5: Solve for x
    x = 138,146,203,712,361.86/12,281,715.40
  6. Step 6: Final answer
    x = 11,248,119.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.