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Finding the Fourth Proportional to 10,341.60, 15,512.40 and 7,425.60

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Solution

The fourth proportional to 10,341.60, 15,512.40 and 7,425.60 is: 11,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,341.60 : 15,512.40 = 7,425.60 : x
  2. Step 2: Convert to fraction form
    10,341.60/15,512.40 = 7,425.60/x
  3. Step 3: Cross multiply
    10,341.60x = 15,512.40 × 7,425.60
  4. Step 4: Simplify right side
    10,341.60x = 115,188,877.44
  5. Step 5: Solve for x
    x = 115,188,877.44/10,341.60
  6. Step 6: Final answer
    x = 11,138.40

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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.