Home / 20,422.23-28,181.62-13,706.92

Finding the Fourth Proportional to 20,422.23, 28,181.62 and 13,706.92

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Solution

The fourth proportional to 20,422.23, 28,181.62 and 13,706.92 is: 18,914.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.23 : 28,181.62 = 13,706.92 : x
  2. Step 2: Convert to fraction form
    20,422.23/28,181.62 = 13,706.92/x
  3. Step 3: Cross multiply
    20,422.23x = 28,181.62 × 13,706.92
  4. Step 4: Simplify right side
    20,422.23x = 386,283,263.17
  5. Step 5: Solve for x
    x = 386,283,263.17/20,422.23
  6. Step 6: Final answer
    x = 18,914.85

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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.