Home / 20,729.32-31,069.63-9,612.61

Finding the Fourth Proportional to 20,729.32, 31,069.63 and 9,612.61

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Solution

The fourth proportional to 20,729.32, 31,069.63 and 9,612.61 is: 14,407.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.32 : 31,069.63 = 9,612.61 : x
  2. Step 2: Convert to fraction form
    20,729.32/31,069.63 = 9,612.61/x
  3. Step 3: Cross multiply
    20,729.32x = 31,069.63 × 9,612.61
  4. Step 4: Simplify right side
    20,729.32x = 298,660,236.03
  5. Step 5: Solve for x
    x = 298,660,236.03/20,729.32
  6. Step 6: Final answer
    x = 14,407.62

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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.