Home / 12,458,867.70-18,688,301.55-7,650,966.90

Finding the Fourth Proportional to 12,458,867.70, 18,688,301.55 and 7,650,966.90

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Solution

The fourth proportional to 12,458,867.70, 18,688,301.55 and 7,650,966.90 is: 11,476,450.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,867.70 : 18,688,301.55 = 7,650,966.90 : x
  2. Step 2: Convert to fraction form
    12,458,867.70/18,688,301.55 = 7,650,966.90/x
  3. Step 3: Cross multiply
    12,458,867.70x = 18,688,301.55 × 7,650,966.90
  4. Step 4: Simplify right side
    12,458,867.70x = 142,983,576,576,268.72
  5. Step 5: Solve for x
    x = 142,983,576,576,268.72/12,458,867.70
  6. Step 6: Final answer
    x = 11,476,450.35

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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.