Home / 38,127.53-52,615.37-21,131.72

Finding the Fourth Proportional to 38,127.53, 52,615.37 and 21,131.72

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Solution

The fourth proportional to 38,127.53, 52,615.37 and 21,131.72 is: 29,161.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,127.53 : 52,615.37 = 21,131.72 : x
  2. Step 2: Convert to fraction form
    38,127.53/52,615.37 = 21,131.72/x
  3. Step 3: Cross multiply
    38,127.53x = 52,615.37 × 21,131.72
  4. Step 4: Simplify right side
    38,127.53x = 1,111,853,292.42
  5. Step 5: Solve for x
    x = 1,111,853,292.42/38,127.53
  6. Step 6: Final answer
    x = 29,161.43

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Double scale
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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.