Home / 39,428.40-54,411.30-21,523.42

Finding the Fourth Proportional to 39,428.40, 54,411.30 and 21,523.42

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Solution

The fourth proportional to 39,428.40, 54,411.30 and 21,523.42 is: 29,702.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,428.40 : 54,411.30 = 21,523.42 : x
  2. Step 2: Convert to fraction form
    39,428.40/54,411.30 = 21,523.42/x
  3. Step 3: Cross multiply
    39,428.40x = 54,411.30 × 21,523.42
  4. Step 4: Simplify right side
    39,428.40x = 1,171,117,330.66
  5. Step 5: Solve for x
    x = 1,171,117,330.66/39,428.40
  6. Step 6: Final answer
    x = 29,702.38

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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.