Home / 31,687.17-43,739.22-18,263.76

Finding the Fourth Proportional to 31,687.17, 43,739.22 and 18,263.76

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Solution

The fourth proportional to 31,687.17, 43,739.22 and 18,263.76 is: 25,210.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.17 : 43,739.22 = 18,263.76 : x
  2. Step 2: Convert to fraction form
    31,687.17/43,739.22 = 18,263.76/x
  3. Step 3: Cross multiply
    31,687.17x = 43,739.22 × 18,263.76
  4. Step 4: Simplify right side
    31,687.17x = 798,842,616.67
  5. Step 5: Solve for x
    x = 798,842,616.67/31,687.17
  6. Step 6: Final answer
    x = 25,210.29

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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.