Home / 28,472.32-42,684.18-20,126.08

Finding the Fourth Proportional to 28,472.32, 42,684.18 and 20,126.08

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Solution

The fourth proportional to 28,472.32, 42,684.18 and 20,126.08 is: 30,171.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.32 : 42,684.18 = 20,126.08 : x
  2. Step 2: Convert to fraction form
    28,472.32/42,684.18 = 20,126.08/x
  3. Step 3: Cross multiply
    28,472.32x = 42,684.18 × 20,126.08
  4. Step 4: Simplify right side
    28,472.32x = 859,065,221.41
  5. Step 5: Solve for x
    x = 859,065,221.41/28,472.32
  6. Step 6: Final answer
    x = 30,171.94

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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.