Home / 13,306.91-18,363.65-7,338.78

Finding the Fourth Proportional to 13,306.91, 18,363.65 and 7,338.78

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Solution

The fourth proportional to 13,306.91, 18,363.65 and 7,338.78 is: 10,127.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.91 : 18,363.65 = 7,338.78 : x
  2. Step 2: Convert to fraction form
    13,306.91/18,363.65 = 7,338.78/x
  3. Step 3: Cross multiply
    13,306.91x = 18,363.65 × 7,338.78
  4. Step 4: Simplify right side
    13,306.91x = 134,766,750.65
  5. Step 5: Solve for x
    x = 134,766,750.65/13,306.91
  6. Step 6: Final answer
    x = 10,127.58

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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.