Home / 21,689,204.28-29,931,407.28-11,899,470.56

Finding the Fourth Proportional to 21,689,204.28, 29,931,407.28 and 11,899,470.56

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Solution

The fourth proportional to 21,689,204.28, 29,931,407.28 and 11,899,470.56 is: 16,421,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,689,204.28 : 29,931,407.28 = 11,899,470.56 : x
  2. Step 2: Convert to fraction form
    21,689,204.28/29,931,407.28 = 11,899,470.56/x
  3. Step 3: Cross multiply
    21,689,204.28x = 29,931,407.28 × 11,899,470.56
  4. Step 4: Simplify right side
    21,689,204.28x = 356,167,899,747,729.69
  5. Step 5: Solve for x
    x = 356,167,899,747,729.69/21,689,204.28
  6. Step 6: Final answer
    x = 16,421,436.91

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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.