Home / 28,240.73-38,972.57-15,493.10

Finding the Fourth Proportional to 28,240.73, 38,972.57 and 15,493.10

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Solution

The fourth proportional to 28,240.73, 38,972.57 and 15,493.10 is: 21,380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.73 : 38,972.57 = 15,493.10 : x
  2. Step 2: Convert to fraction form
    28,240.73/38,972.57 = 15,493.10/x
  3. Step 3: Cross multiply
    28,240.73x = 38,972.57 × 15,493.10
  4. Step 4: Simplify right side
    28,240.73x = 603,805,805.12
  5. Step 5: Solve for x
    x = 603,805,805.12/28,240.73
  6. Step 6: Final answer
    x = 21,380.68

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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.