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Finding the Fourth Proportional to 16,929.20, 25,422.60 and 12,551.60

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Solution

The fourth proportional to 16,929.20, 25,422.60 and 12,551.60 is: 18,848.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,929.20 : 25,422.60 = 12,551.60 : x
  2. Step 2: Convert to fraction form
    16,929.20/25,422.60 = 12,551.60/x
  3. Step 3: Cross multiply
    16,929.20x = 25,422.60 × 12,551.60
  4. Step 4: Simplify right side
    16,929.20x = 319,094,306.16
  5. Step 5: Solve for x
    x = 319,094,306.16/16,929.20
  6. Step 6: Final answer
    x = 18,848.75

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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.