Home / 20,693.60-28,541.92-13,133.44

Finding the Fourth Proportional to 20,693.60, 28,541.92 and 13,133.44

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Solution

The fourth proportional to 20,693.60, 28,541.92 and 13,133.44 is: 18,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.60 : 28,541.92 = 13,133.44 : x
  2. Step 2: Convert to fraction form
    20,693.60/28,541.92 = 13,133.44/x
  3. Step 3: Cross multiply
    20,693.60x = 28,541.92 × 13,133.44
  4. Step 4: Simplify right side
    20,693.60x = 374,853,593.80
  5. Step 5: Solve for x
    x = 374,853,593.80/20,693.60
  6. Step 6: Final answer
    x = 18,114.47

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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.