Home / 20,976.14-31,478.76-13,562.22

Finding the Fourth Proportional to 20,976.14, 31,478.76 and 13,562.22

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Solution

The fourth proportional to 20,976.14, 31,478.76 and 13,562.22 is: 20,352.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.14 : 31,478.76 = 13,562.22 : x
  2. Step 2: Convert to fraction form
    20,976.14/31,478.76 = 13,562.22/x
  3. Step 3: Cross multiply
    20,976.14x = 31,478.76 × 13,562.22
  4. Step 4: Simplify right side
    20,976.14x = 426,921,868.45
  5. Step 5: Solve for x
    x = 426,921,868.45/20,976.14
  6. Step 6: Final answer
    x = 20,352.74

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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.