Home / 20,818.76-31,227.18-7,670.24

Finding the Fourth Proportional to 20,818.76, 31,227.18 and 7,670.24

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Solution

The fourth proportional to 20,818.76, 31,227.18 and 7,670.24 is: 11,505.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.76 : 31,227.18 = 7,670.24 : x
  2. Step 2: Convert to fraction form
    20,818.76/31,227.18 = 7,670.24/x
  3. Step 3: Cross multiply
    20,818.76x = 31,227.18 × 7,670.24
  4. Step 4: Simplify right side
    20,818.76x = 239,519,965.12
  5. Step 5: Solve for x
    x = 239,519,965.12/20,818.76
  6. Step 6: Final answer
    x = 11,505.01

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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.