Home / 31,687.06-43,725.14-18,937.72

Finding the Fourth Proportional to 31,687.06, 43,725.14 and 18,937.72

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Solution

The fourth proportional to 31,687.06, 43,725.14 and 18,937.72 is: 26,132.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.06 : 43,725.14 = 18,937.72 : x
  2. Step 2: Convert to fraction form
    31,687.06/43,725.14 = 18,937.72/x
  3. Step 3: Cross multiply
    31,687.06x = 43,725.14 × 18,937.72
  4. Step 4: Simplify right side
    31,687.06x = 828,054,458.28
  5. Step 5: Solve for x
    x = 828,054,458.28/31,687.06
  6. Step 6: Final answer
    x = 26,132.26

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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.