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Finding the Fourth Proportional to 17,928.20, 26,859.90 and 15,854.60

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Solution

The fourth proportional to 17,928.20, 26,859.90 and 15,854.60 is: 23,753.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,928.20 : 26,859.90 = 15,854.60 : x
  2. Step 2: Convert to fraction form
    17,928.20/26,859.90 = 15,854.60/x
  3. Step 3: Cross multiply
    17,928.20x = 26,859.90 × 15,854.60
  4. Step 4: Simplify right side
    17,928.20x = 425,852,970.54
  5. Step 5: Solve for x
    x = 425,852,970.54/17,928.20
  6. Step 6: Final answer
    x = 23,753.25

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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.