Home / 39,428.66-54,410.82-21,523.20

Finding the Fourth Proportional to 39,428.66, 54,410.82 and 21,523.20

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Solution

The fourth proportional to 39,428.66, 54,410.82 and 21,523.20 is: 29,701.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,428.66 : 54,410.82 = 21,523.20 : x
  2. Step 2: Convert to fraction form
    39,428.66/54,410.82 = 21,523.20/x
  3. Step 3: Cross multiply
    39,428.66x = 54,410.82 × 21,523.20
  4. Step 4: Simplify right side
    39,428.66x = 1,171,094,961.02
  5. Step 5: Solve for x
    x = 1,171,094,961.02/39,428.66
  6. Step 6: Final answer
    x = 29,701.62

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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.