Home / 25,147.60-34,732.20-21,821.20

Finding the Fourth Proportional to 25,147.60, 34,732.20 and 21,821.20

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Solution

The fourth proportional to 25,147.60, 34,732.20 and 21,821.20 is: 30,138.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,147.60 : 34,732.20 = 21,821.20 : x
  2. Step 2: Convert to fraction form
    25,147.60/34,732.20 = 21,821.20/x
  3. Step 3: Cross multiply
    25,147.60x = 34,732.20 × 21,821.20
  4. Step 4: Simplify right side
    25,147.60x = 757,898,282.64
  5. Step 5: Solve for x
    x = 757,898,282.64/25,147.60
  6. Step 6: Final answer
    x = 30,138.00

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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.