Home / 10,987.16-15,162.54-6,271.88

Finding the Fourth Proportional to 10,987.16, 15,162.54 and 6,271.88

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Solution

The fourth proportional to 10,987.16, 15,162.54 and 6,271.88 is: 8,655.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.16 : 15,162.54 = 6,271.88 : x
  2. Step 2: Convert to fraction form
    10,987.16/15,162.54 = 6,271.88/x
  3. Step 3: Cross multiply
    10,987.16x = 15,162.54 × 6,271.88
  4. Step 4: Simplify right side
    10,987.16x = 95,097,631.38
  5. Step 5: Solve for x
    x = 95,097,631.38/10,987.16
  6. Step 6: Final answer
    x = 8,655.34

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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.