Home / 31,734.65-43,782.10-18,988.13

Finding the Fourth Proportional to 31,734.65, 43,782.10 and 18,988.13

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Solution

The fourth proportional to 31,734.65, 43,782.10 and 18,988.13 is: 26,196.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,734.65 : 43,782.10 = 18,988.13 : x
  2. Step 2: Convert to fraction form
    31,734.65/43,782.10 = 18,988.13/x
  3. Step 3: Cross multiply
    31,734.65x = 43,782.10 × 18,988.13
  4. Step 4: Simplify right side
    31,734.65x = 831,340,268.46
  5. Step 5: Solve for x
    x = 831,340,268.46/31,734.65
  6. Step 6: Final answer
    x = 26,196.61

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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.