Home / 26,931.12-40,378.45-9,391.38

Finding the Fourth Proportional to 26,931.12, 40,378.45 and 9,391.38

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Solution

The fourth proportional to 26,931.12, 40,378.45 and 9,391.38 is: 14,080.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,931.12 : 40,378.45 = 9,391.38 : x
  2. Step 2: Convert to fraction form
    26,931.12/40,378.45 = 9,391.38/x
  3. Step 3: Cross multiply
    26,931.12x = 40,378.45 × 9,391.38
  4. Step 4: Simplify right side
    26,931.12x = 379,209,367.76
  5. Step 5: Solve for x
    x = 379,209,367.76/26,931.12
  6. Step 6: Final answer
    x = 14,080.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.