Home / 10,987.49-15,161.84-6,207.85

Finding the Fourth Proportional to 10,987.49, 15,161.84 and 6,207.85

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Solution

The fourth proportional to 10,987.49, 15,161.84 and 6,207.85 is: 8,566.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.49 : 15,161.84 = 6,207.85 : x
  2. Step 2: Convert to fraction form
    10,987.49/15,161.84 = 6,207.85/x
  3. Step 3: Cross multiply
    10,987.49x = 15,161.84 × 6,207.85
  4. Step 4: Simplify right side
    10,987.49x = 94,122,446.25
  5. Step 5: Solve for x
    x = 94,122,446.25/10,987.49
  6. Step 6: Final answer
    x = 8,566.33

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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.