Home / 31,276.77-43,161.95-17,129.61

Finding the Fourth Proportional to 31,276.77, 43,161.95 and 17,129.61

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Solution

The fourth proportional to 31,276.77, 43,161.95 and 17,129.61 is: 23,638.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,276.77 : 43,161.95 = 17,129.61 : x
  2. Step 2: Convert to fraction form
    31,276.77/43,161.95 = 17,129.61/x
  3. Step 3: Cross multiply
    31,276.77x = 43,161.95 × 17,129.61
  4. Step 4: Simplify right side
    31,276.77x = 739,347,370.34
  5. Step 5: Solve for x
    x = 739,347,370.34/31,276.77
  6. Step 6: Final answer
    x = 23,638.87

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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.