Home / 20,602.42-28,423.89-13,532.66

Finding the Fourth Proportional to 20,602.42, 28,423.89 and 13,532.66

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Solution

The fourth proportional to 20,602.42, 28,423.89 and 13,532.66 is: 18,670.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.42 : 28,423.89 = 13,532.66 : x
  2. Step 2: Convert to fraction form
    20,602.42/28,423.89 = 13,532.66/x
  3. Step 3: Cross multiply
    20,602.42x = 28,423.89 × 13,532.66
  4. Step 4: Simplify right side
    20,602.42x = 384,650,839.25
  5. Step 5: Solve for x
    x = 384,650,839.25/20,602.42
  6. Step 6: Final answer
    x = 18,670.18

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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.