Home / 10,987.80-15,164.10-6,208.62

Finding the Fourth Proportional to 10,987.80, 15,164.10 and 6,208.62

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Solution

The fourth proportional to 10,987.80, 15,164.10 and 6,208.62 is: 8,568.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.80 : 15,164.10 = 6,208.62 : x
  2. Step 2: Convert to fraction form
    10,987.80/15,164.10 = 6,208.62/x
  3. Step 3: Cross multiply
    10,987.80x = 15,164.10 × 6,208.62
  4. Step 4: Simplify right side
    10,987.80x = 94,148,134.54
  5. Step 5: Solve for x
    x = 94,148,134.54/10,987.80
  6. Step 6: Final answer
    x = 8,568.42

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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.