Home / 12,248,454.30-18,372,681.45-8,422,079.10

Finding the Fourth Proportional to 12,248,454.30, 18,372,681.45 and 8,422,079.10

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Solution

The fourth proportional to 12,248,454.30, 18,372,681.45 and 8,422,079.10 is: 12,633,118.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,248,454.30 : 18,372,681.45 = 8,422,079.10 : x
  2. Step 2: Convert to fraction form
    12,248,454.30/18,372,681.45 = 8,422,079.10/x
  3. Step 3: Cross multiply
    12,248,454.30x = 18,372,681.45 × 8,422,079.10
  4. Step 4: Simplify right side
    12,248,454.30x = 154,736,176,451,002.69
  5. Step 5: Solve for x
    x = 154,736,176,451,002.69/12,248,454.30
  6. Step 6: Final answer
    x = 12,633,118.65

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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.