Home / 28,974,453.28-39,985,063.78-15,921,715.56

Finding the Fourth Proportional to 28,974,453.28, 39,985,063.78 and 15,921,715.56

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Solution

The fourth proportional to 28,974,453.28, 39,985,063.78 and 15,921,715.56 is: 21,972,142.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974,453.28 : 39,985,063.78 = 15,921,715.56 : x
  2. Step 2: Convert to fraction form
    28,974,453.28/39,985,063.78 = 15,921,715.56/x
  3. Step 3: Cross multiply
    28,974,453.28x = 39,985,063.78 × 15,921,715.56
  4. Step 4: Simplify right side
    28,974,453.28x = 636,630,812,153,618.50
  5. Step 5: Solve for x
    x = 636,630,812,153,618.50/28,974,453.28
  6. Step 6: Final answer
    x = 21,972,142.36

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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.