Home / 15,579,715-21,499,610.61-8,704,248.70

Finding the Fourth Proportional to 15,579,715, 21,499,610.61 and 8,704,248.70

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Solution

The fourth proportional to 15,579,715, 21,499,610.61 and 8,704,248.70 is: 12,011,641.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579,715 : 21,499,610.61 = 8,704,248.70 : x
  2. Step 2: Convert to fraction form
    15,579,715/21,499,610.61 = 8,704,248.70/x
  3. Step 3: Cross multiply
    15,579,715x = 21,499,610.61 × 8,704,248.70
  4. Step 4: Simplify right side
    15,579,715x = 187,137,957,702,598.69
  5. Step 5: Solve for x
    x = 187,137,957,702,598.69/15,579,715
  6. Step 6: Final answer
    x = 12,011,641.91

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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.