Home / 38,124.81-52,610.82-21,128.61

Finding the Fourth Proportional to 38,124.81, 52,610.82 and 21,128.61

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Solution

The fourth proportional to 38,124.81, 52,610.82 and 21,128.61 is: 29,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,124.81 : 52,610.82 = 21,128.61 : x
  2. Step 2: Convert to fraction form
    38,124.81/52,610.82 = 21,128.61/x
  3. Step 3: Cross multiply
    38,124.81x = 52,610.82 × 21,128.61
  4. Step 4: Simplify right side
    38,124.81x = 1,111,593,497.56
  5. Step 5: Solve for x
    x = 1,111,593,497.56/38,124.81
  6. Step 6: Final answer
    x = 29,156.70

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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.