Home / 39,427.28-54,409.75-21,522.30

Finding the Fourth Proportional to 39,427.28, 54,409.75 and 21,522.30

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Solution

The fourth proportional to 39,427.28, 54,409.75 and 21,522.30 is: 29,700.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,427.28 : 54,409.75 = 21,522.30 : x
  2. Step 2: Convert to fraction form
    39,427.28/54,409.75 = 21,522.30/x
  3. Step 3: Cross multiply
    39,427.28x = 54,409.75 × 21,522.30
  4. Step 4: Simplify right side
    39,427.28x = 1,171,023,032.91
  5. Step 5: Solve for x
    x = 1,171,023,032.91/39,427.28
  6. Step 6: Final answer
    x = 29,700.83

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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.