Home / 15,981.28-22,054.80-8,908.96

Finding the Fourth Proportional to 15,981.28, 22,054.80 and 8,908.96

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Solution

The fourth proportional to 15,981.28, 22,054.80 and 8,908.96 is: 12,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.28 : 22,054.80 = 8,908.96 : x
  2. Step 2: Convert to fraction form
    15,981.28/22,054.80 = 8,908.96/x
  3. Step 3: Cross multiply
    15,981.28x = 22,054.80 × 8,908.96
  4. Step 4: Simplify right side
    15,981.28x = 196,485,331.01
  5. Step 5: Solve for x
    x = 196,485,331.01/15,981.28
  6. Step 6: Final answer
    x = 12,294.72

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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.