Home / 13,315.11-18,377.23-7,937.90

Finding the Fourth Proportional to 13,315.11, 18,377.23 and 7,937.90

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Solution

The fourth proportional to 13,315.11, 18,377.23 and 7,937.90 is: 10,955.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.11 : 18,377.23 = 7,937.90 : x
  2. Step 2: Convert to fraction form
    13,315.11/18,377.23 = 7,937.90/x
  3. Step 3: Cross multiply
    13,315.11x = 18,377.23 × 7,937.90
  4. Step 4: Simplify right side
    13,315.11x = 145,876,586.08
  5. Step 5: Solve for x
    x = 145,876,586.08/13,315.11
  6. Step 6: Final answer
    x = 10,955.72

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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.