Home / 12,687,429.28-17,508,913.50-7,180,803.76

Finding the Fourth Proportional to 12,687,429.28, 17,508,913.50 and 7,180,803.76

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Solution

The fourth proportional to 12,687,429.28, 17,508,913.50 and 7,180,803.76 is: 9,909,656.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687,429.28 : 17,508,913.50 = 7,180,803.76 : x
  2. Step 2: Convert to fraction form
    12,687,429.28/17,508,913.50 = 7,180,803.76/x
  3. Step 3: Cross multiply
    12,687,429.28x = 17,508,913.50 × 7,180,803.76
  4. Step 4: Simplify right side
    12,687,429.28x = 125,728,071,894,314.75
  5. Step 5: Solve for x
    x = 125,728,071,894,314.75/12,687,429.28
  6. Step 6: Final answer
    x = 9,909,656.96

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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.