Home / 26,613.90-39,920.85-12,569.31

Finding the Fourth Proportional to 26,613.90, 39,920.85 and 12,569.31

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Solution

The fourth proportional to 26,613.90, 39,920.85 and 12,569.31 is: 18,853.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,613.90 : 39,920.85 = 12,569.31 : x
  2. Step 2: Convert to fraction form
    26,613.90/39,920.85 = 12,569.31/x
  3. Step 3: Cross multiply
    26,613.90x = 39,920.85 × 12,569.31
  4. Step 4: Simplify right side
    26,613.90x = 501,777,539.11
  5. Step 5: Solve for x
    x = 501,777,539.11/26,613.90
  6. Step 6: Final answer
    x = 18,853.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.