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Finding the Fourth Proportional to 15,005.60, 22,508.40 and 12,672.80

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Solution

The fourth proportional to 15,005.60, 22,508.40 and 12,672.80 is: 19,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,005.60 : 22,508.40 = 12,672.80 : x
  2. Step 2: Convert to fraction form
    15,005.60/22,508.40 = 12,672.80/x
  3. Step 3: Cross multiply
    15,005.60x = 22,508.40 × 12,672.80
  4. Step 4: Simplify right side
    15,005.60x = 285,244,451.52
  5. Step 5: Solve for x
    x = 285,244,451.52/15,005.60
  6. Step 6: Final answer
    x = 19,009.20

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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.