Home / 20,772.63-31,158.99-9,086.76

Finding the Fourth Proportional to 20,772.63, 31,158.99 and 9,086.76

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Solution

The fourth proportional to 20,772.63, 31,158.99 and 9,086.76 is: 13,630.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.63 : 31,158.99 = 9,086.76 : x
  2. Step 2: Convert to fraction form
    20,772.63/31,158.99 = 9,086.76/x
  3. Step 3: Cross multiply
    20,772.63x = 31,158.99 × 9,086.76
  4. Step 4: Simplify right side
    20,772.63x = 283,134,263.97
  5. Step 5: Solve for x
    x = 283,134,263.97/20,772.63
  6. Step 6: Final answer
    x = 13,630.16

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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.