Home / 39,235.92-54,146.16-21,330.96

Finding the Fourth Proportional to 39,235.92, 54,146.16 and 21,330.96

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Solution

The fourth proportional to 39,235.92, 54,146.16 and 21,330.96 is: 29,437.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.92 : 54,146.16 = 21,330.96 : x
  2. Step 2: Convert to fraction form
    39,235.92/54,146.16 = 21,330.96/x
  3. Step 3: Cross multiply
    39,235.92x = 54,146.16 × 21,330.96
  4. Step 4: Simplify right side
    39,235.92x = 1,154,989,573.11
  5. Step 5: Solve for x
    x = 1,154,989,573.11/39,235.92
  6. Step 6: Final answer
    x = 29,437.05

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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.