Home / 31,253.22-43,121.37-18,506.65

Finding the Fourth Proportional to 31,253.22, 43,121.37 and 18,506.65

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Solution

The fourth proportional to 31,253.22, 43,121.37 and 18,506.65 is: 25,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,253.22 : 43,121.37 = 18,506.65 : x
  2. Step 2: Convert to fraction form
    31,253.22/43,121.37 = 18,506.65/x
  3. Step 3: Cross multiply
    31,253.22x = 43,121.37 × 18,506.65
  4. Step 4: Simplify right side
    31,253.22x = 798,032,102.11
  5. Step 5: Solve for x
    x = 798,032,102.11/31,253.22
  6. Step 6: Final answer
    x = 25,534.40

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Half scale
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Double scale
Find fourth proportional to 31,254.22, 43,122.75 and 18,507.65
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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.