Home / 39,356.15-54,310.01-21,450.74

Finding the Fourth Proportional to 39,356.15, 54,310.01 and 21,450.74

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Solution

The fourth proportional to 39,356.15, 54,310.01 and 21,450.74 is: 29,601.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,356.15 : 54,310.01 = 21,450.74 : x
  2. Step 2: Convert to fraction form
    39,356.15/54,310.01 = 21,450.74/x
  3. Step 3: Cross multiply
    39,356.15x = 54,310.01 × 21,450.74
  4. Step 4: Simplify right side
    39,356.15x = 1,164,989,525.10
  5. Step 5: Solve for x
    x = 1,164,989,525.10/39,356.15
  6. Step 6: Final answer
    x = 29,601.21

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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.