Home / 39,230.90-54,136.38-21,325.76

Finding the Fourth Proportional to 39,230.90, 54,136.38 and 21,325.76

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Solution

The fourth proportional to 39,230.90, 54,136.38 and 21,325.76 is: 29,428.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,230.90 : 54,136.38 = 21,325.76 : x
  2. Step 2: Convert to fraction form
    39,230.90/54,136.38 = 21,325.76/x
  3. Step 3: Cross multiply
    39,230.90x = 54,136.38 × 21,325.76
  4. Step 4: Simplify right side
    39,230.90x = 1,154,499,447.15
  5. Step 5: Solve for x
    x = 1,154,499,447.15/39,230.90
  6. Step 6: Final answer
    x = 29,428.32

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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.