Home / 10,938.72-15,097.68-6,690.48

Finding the Fourth Proportional to 10,938.72, 15,097.68 and 6,690.48

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Solution

The fourth proportional to 10,938.72, 15,097.68 and 6,690.48 is: 9,234.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.72 : 15,097.68 = 6,690.48 : x
  2. Step 2: Convert to fraction form
    10,938.72/15,097.68 = 6,690.48/x
  3. Step 3: Cross multiply
    10,938.72x = 15,097.68 × 6,690.48
  4. Step 4: Simplify right side
    10,938.72x = 101,010,726.09
  5. Step 5: Solve for x
    x = 101,010,726.09/10,938.72
  6. Step 6: Final answer
    x = 9,234.24

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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.