Home / 31,645.17-43,663.10-18,213.95

Finding the Fourth Proportional to 31,645.17, 43,663.10 and 18,213.95

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Solution

The fourth proportional to 31,645.17, 43,663.10 and 18,213.95 is: 25,131.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,645.17 : 43,663.10 = 18,213.95 : x
  2. Step 2: Convert to fraction form
    31,645.17/43,663.10 = 18,213.95/x
  3. Step 3: Cross multiply
    31,645.17x = 43,663.10 × 18,213.95
  4. Step 4: Simplify right side
    31,645.17x = 795,277,210.86
  5. Step 5: Solve for x
    x = 795,277,210.86/31,645.17
  6. Step 6: Final answer
    x = 25,131.08

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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.