Home / 20,566.61-28,382.43-12,613.22

Finding the Fourth Proportional to 20,566.61, 28,382.43 and 12,613.22

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Solution

The fourth proportional to 20,566.61, 28,382.43 and 12,613.22 is: 17,406.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.61 : 28,382.43 = 12,613.22 : x
  2. Step 2: Convert to fraction form
    20,566.61/28,382.43 = 12,613.22/x
  3. Step 3: Cross multiply
    20,566.61x = 28,382.43 × 12,613.22
  4. Step 4: Simplify right side
    20,566.61x = 357,993,691.81
  5. Step 5: Solve for x
    x = 357,993,691.81/20,566.61
  6. Step 6: Final answer
    x = 17,406.55

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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.