Home / 10,987.71-15,162.66-6,271.80

Finding the Fourth Proportional to 10,987.71, 15,162.66 and 6,271.80

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Solution

The fourth proportional to 10,987.71, 15,162.66 and 6,271.80 is: 8,654.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.71 : 15,162.66 = 6,271.80 : x
  2. Step 2: Convert to fraction form
    10,987.71/15,162.66 = 6,271.80/x
  3. Step 3: Cross multiply
    10,987.71x = 15,162.66 × 6,271.80
  4. Step 4: Simplify right side
    10,987.71x = 95,097,170.99
  5. Step 5: Solve for x
    x = 95,097,170.99/10,987.71
  6. Step 6: Final answer
    x = 8,654.87

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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.