Home / 20,724.12-31,068.20-9,625.10

Finding the Fourth Proportional to 20,724.12, 31,068.20 and 9,625.10

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Solution

The fourth proportional to 20,724.12, 31,068.20 and 9,625.10 is: 14,429.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.12 : 31,068.20 = 9,625.10 : x
  2. Step 2: Convert to fraction form
    20,724.12/31,068.20 = 9,625.10/x
  3. Step 3: Cross multiply
    20,724.12x = 31,068.20 × 9,625.10
  4. Step 4: Simplify right side
    20,724.12x = 299,034,531.82
  5. Step 5: Solve for x
    x = 299,034,531.82/20,724.12
  6. Step 6: Final answer
    x = 14,429.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.