Home / 39,280.70-54,207.87-21,376.19

Finding the Fourth Proportional to 39,280.70, 54,207.87 and 21,376.19

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Solution

The fourth proportional to 39,280.70, 54,207.87 and 21,376.19 is: 29,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,280.70 : 54,207.87 = 21,376.19 : x
  2. Step 2: Convert to fraction form
    39,280.70/54,207.87 = 21,376.19/x
  3. Step 3: Cross multiply
    39,280.70x = 54,207.87 × 21,376.19
  4. Step 4: Simplify right side
    39,280.70x = 1,158,757,728.62
  5. Step 5: Solve for x
    x = 1,158,757,728.62/39,280.70
  6. Step 6: Final answer
    x = 29,499.42

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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.