Home / 12,687,432.28-17,508,917.64-7,180,806.76

Finding the Fourth Proportional to 12,687,432.28, 17,508,917.64 and 7,180,806.76

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Solution

The fourth proportional to 12,687,432.28, 17,508,917.64 and 7,180,806.76 is: 9,909,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687,432.28 : 17,508,917.64 = 7,180,806.76 : x
  2. Step 2: Convert to fraction form
    12,687,432.28/17,508,917.64 = 7,180,806.76/x
  3. Step 3: Cross multiply
    12,687,432.28x = 17,508,917.64 × 7,180,806.76
  4. Step 4: Simplify right side
    12,687,432.28x = 125,728,154,149,595.25
  5. Step 5: Solve for x
    x = 125,728,154,149,595.25/12,687,432.28
  6. Step 6: Final answer
    x = 9,909,661.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.