Home / 20,619.46-28,445.88-12,124.18

Finding the Fourth Proportional to 20,619.46, 28,445.88 and 12,124.18

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Solution

The fourth proportional to 20,619.46, 28,445.88 and 12,124.18 is: 16,726.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.46 : 28,445.88 = 12,124.18 : x
  2. Step 2: Convert to fraction form
    20,619.46/28,445.88 = 12,124.18/x
  3. Step 3: Cross multiply
    20,619.46x = 28,445.88 × 12,124.18
  4. Step 4: Simplify right side
    20,619.46x = 344,882,969.38
  5. Step 5: Solve for x
    x = 344,882,969.38/20,619.46
  6. Step 6: Final answer
    x = 16,726.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.