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Finding the Fourth Proportional to 15,891.20, 23,788.20 and 14,141.60

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Solution

The fourth proportional to 15,891.20, 23,788.20 and 14,141.60 is: 21,169.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.20 : 23,788.20 = 14,141.60 : x
  2. Step 2: Convert to fraction form
    15,891.20/23,788.20 = 14,141.60/x
  3. Step 3: Cross multiply
    15,891.20x = 23,788.20 × 14,141.60
  4. Step 4: Simplify right side
    15,891.20x = 336,403,209.12
  5. Step 5: Solve for x
    x = 336,403,209.12/15,891.20
  6. Step 6: Final answer
    x = 21,169.15

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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.