Home / 38,121.13-52,602.18-21,124.55

Finding the Fourth Proportional to 38,121.13, 52,602.18 and 21,124.55

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Solution

The fourth proportional to 38,121.13, 52,602.18 and 21,124.55 is: 29,149.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,121.13 : 52,602.18 = 21,124.55 : x
  2. Step 2: Convert to fraction form
    38,121.13/52,602.18 = 21,124.55/x
  3. Step 3: Cross multiply
    38,121.13x = 52,602.18 × 21,124.55
  4. Step 4: Simplify right side
    38,121.13x = 1,111,197,513.02
  5. Step 5: Solve for x
    x = 1,111,197,513.02/38,121.13
  6. Step 6: Final answer
    x = 29,149.13

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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.