Home / 20,423.91-28,186.38-11,350.33

Finding the Fourth Proportional to 20,423.91, 28,186.38 and 11,350.33

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Solution

The fourth proportional to 20,423.91, 28,186.38 and 11,350.33 is: 15,664.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.91 : 28,186.38 = 11,350.33 : x
  2. Step 2: Convert to fraction form
    20,423.91/28,186.38 = 11,350.33/x
  3. Step 3: Cross multiply
    20,423.91x = 28,186.38 × 11,350.33
  4. Step 4: Simplify right side
    20,423.91x = 319,924,644.04
  5. Step 5: Solve for x
    x = 319,924,644.04/20,423.91
  6. Step 6: Final answer
    x = 15,664.22

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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.