Home / 31,655.10-43,689.41-18,234.13

Finding the Fourth Proportional to 31,655.10, 43,689.41 and 18,234.13

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Solution

The fourth proportional to 31,655.10, 43,689.41 and 18,234.13 is: 25,166.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,655.10 : 43,689.41 = 18,234.13 : x
  2. Step 2: Convert to fraction form
    31,655.10/43,689.41 = 18,234.13/x
  3. Step 3: Cross multiply
    31,655.10x = 43,689.41 × 18,234.13
  4. Step 4: Simplify right side
    31,655.10x = 796,638,381.56
  5. Step 5: Solve for x
    x = 796,638,381.56/31,655.10
  6. Step 6: Final answer
    x = 25,166.19

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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.