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Finding the Fourth Proportional to 10,031.60, 15,018.60 and 9,743.60

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Solution

The fourth proportional to 10,031.60, 15,018.60 and 9,743.60 is: 14,587.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,031.60 : 15,018.60 = 9,743.60 : x
  2. Step 2: Convert to fraction form
    10,031.60/15,018.60 = 9,743.60/x
  3. Step 3: Cross multiply
    10,031.60x = 15,018.60 × 9,743.60
  4. Step 4: Simplify right side
    10,031.60x = 146,335,230.96
  5. Step 5: Solve for x
    x = 146,335,230.96/10,031.60
  6. Step 6: Final answer
    x = 14,587.43

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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.