Home / 11,161.98-15,402.47-6,685.65

Finding the Fourth Proportional to 11,161.98, 15,402.47 and 6,685.65

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Solution

The fourth proportional to 11,161.98, 15,402.47 and 6,685.65 is: 9,225.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.98 : 15,402.47 = 6,685.65 : x
  2. Step 2: Convert to fraction form
    11,161.98/15,402.47 = 6,685.65/x
  3. Step 3: Cross multiply
    11,161.98x = 15,402.47 × 6,685.65
  4. Step 4: Simplify right side
    11,161.98x = 102,975,490.13
  5. Step 5: Solve for x
    x = 102,975,490.13/11,161.98
  6. Step 6: Final answer
    x = 9,225.56

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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.