Home / 28,138.60-38,835.48-17,531.66

Finding the Fourth Proportional to 28,138.60, 38,835.48 and 17,531.66

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Solution

The fourth proportional to 28,138.60, 38,835.48 and 17,531.66 is: 24,196.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.60 : 38,835.48 = 17,531.66 : x
  2. Step 2: Convert to fraction form
    28,138.60/38,835.48 = 17,531.66/x
  3. Step 3: Cross multiply
    28,138.60x = 38,835.48 × 17,531.66
  4. Step 4: Simplify right side
    28,138.60x = 680,850,431.30
  5. Step 5: Solve for x
    x = 680,850,431.30/28,138.60
  6. Step 6: Final answer
    x = 24,196.32

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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.