Home / 13,715.91-18,926.91-7,748.19

Finding the Fourth Proportional to 13,715.91, 18,926.91 and 7,748.19

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Solution

The fourth proportional to 13,715.91, 18,926.91 and 7,748.19 is: 10,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.91 : 18,926.91 = 7,748.19 : x
  2. Step 2: Convert to fraction form
    13,715.91/18,926.91 = 7,748.19/x
  3. Step 3: Cross multiply
    13,715.91x = 18,926.91 × 7,748.19
  4. Step 4: Simplify right side
    13,715.91x = 146,649,294.79
  5. Step 5: Solve for x
    x = 146,649,294.79/13,715.91
  6. Step 6: Final answer
    x = 10,691.91

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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.