Home / 20,543.42-28,349.80-11,590.70

Finding the Fourth Proportional to 20,543.42, 28,349.80 and 11,590.70

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Solution

The fourth proportional to 20,543.42, 28,349.80 and 11,590.70 is: 15,995.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.42 : 28,349.80 = 11,590.70 : x
  2. Step 2: Convert to fraction form
    20,543.42/28,349.80 = 11,590.70/x
  3. Step 3: Cross multiply
    20,543.42x = 28,349.80 × 11,590.70
  4. Step 4: Simplify right side
    20,543.42x = 328,593,856.13
  5. Step 5: Solve for x
    x = 328,593,856.13/20,543.42
  6. Step 6: Final answer
    x = 15,995.09

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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.