Home / 28,188.28-38,837.18-18,611.10

Finding the Fourth Proportional to 28,188.28, 38,837.18 and 18,611.10

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Solution

The fourth proportional to 28,188.28, 38,837.18 and 18,611.10 is: 25,641.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.28 : 38,837.18 = 18,611.10 : x
  2. Step 2: Convert to fraction form
    28,188.28/38,837.18 = 18,611.10/x
  3. Step 3: Cross multiply
    28,188.28x = 38,837.18 × 18,611.10
  4. Step 4: Simplify right side
    28,188.28x = 722,802,640.70
  5. Step 5: Solve for x
    x = 722,802,640.70/28,188.28
  6. Step 6: Final answer
    x = 25,641.96

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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.