Home / 39,380.10-54,345.01-21,474.95

Finding the Fourth Proportional to 39,380.10, 54,345.01 and 21,474.95

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Solution

The fourth proportional to 39,380.10, 54,345.01 and 21,474.95 is: 29,635.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,380.10 : 54,345.01 = 21,474.95 : x
  2. Step 2: Convert to fraction form
    39,380.10/54,345.01 = 21,474.95/x
  3. Step 3: Cross multiply
    39,380.10x = 54,345.01 × 21,474.95
  4. Step 4: Simplify right side
    39,380.10x = 1,167,056,372.50
  5. Step 5: Solve for x
    x = 1,167,056,372.50/39,380.10
  6. Step 6: Final answer
    x = 29,635.69

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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.