Home / 15,221.20-22,831.80-9,972.40

Finding the Fourth Proportional to 15,221.20, 22,831.80 and 9,972.40

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Solution

The fourth proportional to 15,221.20, 22,831.80 and 9,972.40 is: 14,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.20 : 22,831.80 = 9,972.40 : x
  2. Step 2: Convert to fraction form
    15,221.20/22,831.80 = 9,972.40/x
  3. Step 3: Cross multiply
    15,221.20x = 22,831.80 × 9,972.40
  4. Step 4: Simplify right side
    15,221.20x = 227,687,842.32
  5. Step 5: Solve for x
    x = 227,687,842.32/15,221.20
  6. Step 6: Final answer
    x = 14,958.60

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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.