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Finding the Fourth Proportional to 31,630.12, 43,649.02 and 17,483.20

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Solution

The fourth proportional to 31,630.12, 43,649.02 and 17,483.20 is: 24,126.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,630.12 : 43,649.02 = 17,483.20 : x
  2. Step 2: Convert to fraction form
    31,630.12/43,649.02 = 17,483.20/x
  3. Step 3: Cross multiply
    31,630.12x = 43,649.02 × 17,483.20
  4. Step 4: Simplify right side
    31,630.12x = 763,124,546.46
  5. Step 5: Solve for x
    x = 763,124,546.46/31,630.12
  6. Step 6: Final answer
    x = 24,126.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.