Home / 15,613.29-21,545.15-8,897.58

Finding the Fourth Proportional to 15,613.29, 21,545.15 and 8,897.58

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Solution

The fourth proportional to 15,613.29, 21,545.15 and 8,897.58 is: 12,277.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.29 : 21,545.15 = 8,897.58 : x
  2. Step 2: Convert to fraction form
    15,613.29/21,545.15 = 8,897.58/x
  3. Step 3: Cross multiply
    15,613.29x = 21,545.15 × 8,897.58
  4. Step 4: Simplify right side
    15,613.29x = 191,699,651.25
  5. Step 5: Solve for x
    x = 191,699,651.25/15,613.29
  6. Step 6: Final answer
    x = 12,277.98

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1.5x scale

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.