Home / 13,715.22-18,926.10-7,747.50

Finding the Fourth Proportional to 13,715.22, 18,926.10 and 7,747.50

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Solution

The fourth proportional to 13,715.22, 18,926.10 and 7,747.50 is: 10,691.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.22 : 18,926.10 = 7,747.50 : x
  2. Step 2: Convert to fraction form
    13,715.22/18,926.10 = 7,747.50/x
  3. Step 3: Cross multiply
    13,715.22x = 18,926.10 × 7,747.50
  4. Step 4: Simplify right side
    13,715.22x = 146,629,959.75
  5. Step 5: Solve for x
    x = 146,629,959.75/13,715.22
  6. Step 6: Final answer
    x = 10,691.04

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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.