Home / 15,613.77-21,545.52-8,899.23

Finding the Fourth Proportional to 15,613.77, 21,545.52 and 8,899.23

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Solution

The fourth proportional to 15,613.77, 21,545.52 and 8,899.23 is: 12,280.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.77 : 21,545.52 = 8,899.23 : x
  2. Step 2: Convert to fraction form
    15,613.77/21,545.52 = 8,899.23/x
  3. Step 3: Cross multiply
    15,613.77x = 21,545.52 × 8,899.23
  4. Step 4: Simplify right side
    15,613.77x = 191,738,537.95
  5. Step 5: Solve for x
    x = 191,738,537.95/15,613.77
  6. Step 6: Final answer
    x = 12,280.09

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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.