Home / 20,613.86-28,445.40-11,659.31

Finding the Fourth Proportional to 20,613.86, 28,445.40 and 11,659.31

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Solution

The fourth proportional to 20,613.86, 28,445.40 and 11,659.31 is: 16,088.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.86 : 28,445.40 = 11,659.31 : x
  2. Step 2: Convert to fraction form
    20,613.86/28,445.40 = 11,659.31/x
  3. Step 3: Cross multiply
    20,613.86x = 28,445.40 × 11,659.31
  4. Step 4: Simplify right side
    20,613.86x = 331,653,594.45
  5. Step 5: Solve for x
    x = 331,653,594.45/20,613.86
  6. Step 6: Final answer
    x = 16,088.87

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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.