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Finding the Fourth Proportional to 15,070.40, 22,616.40 and 8,489.60

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Solution

The fourth proportional to 15,070.40, 22,616.40 and 8,489.60 is: 12,740.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.40 : 22,616.40 = 8,489.60 : x
  2. Step 2: Convert to fraction form
    15,070.40/22,616.40 = 8,489.60/x
  3. Step 3: Cross multiply
    15,070.40x = 22,616.40 × 8,489.60
  4. Step 4: Simplify right side
    15,070.40x = 192,004,189.44
  5. Step 5: Solve for x
    x = 192,004,189.44/15,070.40
  6. Step 6: Final answer
    x = 12,740.48

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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.