Home / 20,888.76-31,350.78-11,022.96

Finding the Fourth Proportional to 20,888.76, 31,350.78 and 11,022.96

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Solution

The fourth proportional to 20,888.76, 31,350.78 and 11,022.96 is: 16,543.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.76 : 31,350.78 = 11,022.96 : x
  2. Step 2: Convert to fraction form
    20,888.76/31,350.78 = 11,022.96/x
  3. Step 3: Cross multiply
    20,888.76x = 31,350.78 × 11,022.96
  4. Step 4: Simplify right side
    20,888.76x = 345,578,393.91
  5. Step 5: Solve for x
    x = 345,578,393.91/20,888.76
  6. Step 6: Final answer
    x = 16,543.75

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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.