Home / 15,981.30-22,052.25-8,905.14

Finding the Fourth Proportional to 15,981.30, 22,052.25 and 8,905.14

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Solution

The fourth proportional to 15,981.30, 22,052.25 and 8,905.14 is: 12,288.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.30 : 22,052.25 = 8,905.14 : x
  2. Step 2: Convert to fraction form
    15,981.30/22,052.25 = 8,905.14/x
  3. Step 3: Cross multiply
    15,981.30x = 22,052.25 × 8,905.14
  4. Step 4: Simplify right side
    15,981.30x = 196,378,373.57
  5. Step 5: Solve for x
    x = 196,378,373.57/15,981.30
  6. Step 6: Final answer
    x = 12,288.01

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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.