Home / 38,695.92-57,943.08-21,129.72

Finding the Fourth Proportional to 38,695.92, 57,943.08 and 21,129.72

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Solution

The fourth proportional to 38,695.92, 57,943.08 and 21,129.72 is: 31,639.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,695.92 : 57,943.08 = 21,129.72 : x
  2. Step 2: Convert to fraction form
    38,695.92/57,943.08 = 21,129.72/x
  3. Step 3: Cross multiply
    38,695.92x = 57,943.08 × 21,129.72
  4. Step 4: Simplify right side
    38,695.92x = 1,224,321,056.34
  5. Step 5: Solve for x
    x = 1,224,321,056.34/38,695.92
  6. Step 6: Final answer
    x = 31,639.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.