Home / 12,687,435.28-17,508,921.78-7,180,809.76

Finding the Fourth Proportional to 12,687,435.28, 17,508,921.78 and 7,180,809.76

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Solution

The fourth proportional to 12,687,435.28, 17,508,921.78 and 7,180,809.76 is: 9,909,665.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687,435.28 : 17,508,921.78 = 7,180,809.76 : x
  2. Step 2: Convert to fraction form
    12,687,435.28/17,508,921.78 = 7,180,809.76/x
  3. Step 3: Cross multiply
    12,687,435.28x = 17,508,921.78 × 7,180,809.76
  4. Step 4: Simplify right side
    12,687,435.28x = 125,728,236,404,900.58
  5. Step 5: Solve for x
    x = 125,728,236,404,900.58/12,687,435.28
  6. Step 6: Final answer
    x = 9,909,665.24

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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.