Home / 31,165.33-43,008.12-18,423.11

Finding the Fourth Proportional to 31,165.33, 43,008.12 and 18,423.11

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Solution

The fourth proportional to 31,165.33, 43,008.12 and 18,423.11 is: 25,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,165.33 : 43,008.12 = 18,423.11 : x
  2. Step 2: Convert to fraction form
    31,165.33/43,008.12 = 18,423.11/x
  3. Step 3: Cross multiply
    31,165.33x = 43,008.12 × 18,423.11
  4. Step 4: Simplify right side
    31,165.33x = 792,343,459.06
  5. Step 5: Solve for x
    x = 792,343,459.06/31,165.33
  6. Step 6: Final answer
    x = 25,423.87

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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.