Home / 20,543.59-28,349.69-11,590.86

Finding the Fourth Proportional to 20,543.59, 28,349.69 and 11,590.86

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Solution

The fourth proportional to 20,543.59, 28,349.69 and 11,590.86 is: 15,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.59 : 28,349.69 = 11,590.86 : x
  2. Step 2: Convert to fraction form
    20,543.59/28,349.69 = 11,590.86/x
  3. Step 3: Cross multiply
    20,543.59x = 28,349.69 × 11,590.86
  4. Step 4: Simplify right side
    20,543.59x = 328,597,287.83
  5. Step 5: Solve for x
    x = 328,597,287.83/20,543.59
  6. Step 6: Final answer
    x = 15,995.12

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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.