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Finding the Fourth Proportional to 11,630.40, 17,440.20 and 5,053.20

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Solution

The fourth proportional to 11,630.40, 17,440.20 and 5,053.20 is: 7,577.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,630.40 : 17,440.20 = 5,053.20 : x
  2. Step 2: Convert to fraction form
    11,630.40/17,440.20 = 5,053.20/x
  3. Step 3: Cross multiply
    11,630.40x = 17,440.20 × 5,053.20
  4. Step 4: Simplify right side
    11,630.40x = 88,128,818.64
  5. Step 5: Solve for x
    x = 88,128,818.64/11,630.40
  6. Step 6: Final answer
    x = 7,577.45

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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.