Home / 38,127.81-52,614.96-21,131.61

Finding the Fourth Proportional to 38,127.81, 52,614.96 and 21,131.61

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Solution

The fourth proportional to 38,127.81, 52,614.96 and 21,131.61 is: 29,160.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,127.81 : 52,614.96 = 21,131.61 : x
  2. Step 2: Convert to fraction form
    38,127.81/52,614.96 = 21,131.61/x
  3. Step 3: Cross multiply
    38,127.81x = 52,614.96 × 21,131.61
  4. Step 4: Simplify right side
    38,127.81x = 1,111,838,814.89
  5. Step 5: Solve for x
    x = 1,111,838,814.89/38,127.81
  6. Step 6: Final answer
    x = 29,160.84

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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.