Home / 11,127.08-15,357.12-6,412.88

Finding the Fourth Proportional to 11,127.08, 15,357.12 and 6,412.88

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Solution

The fourth proportional to 11,127.08, 15,357.12 and 6,412.88 is: 8,850.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,127.08 : 15,357.12 = 6,412.88 : x
  2. Step 2: Convert to fraction form
    11,127.08/15,357.12 = 6,412.88/x
  3. Step 3: Cross multiply
    11,127.08x = 15,357.12 × 6,412.88
  4. Step 4: Simplify right side
    11,127.08x = 98,483,367.71
  5. Step 5: Solve for x
    x = 98,483,367.71/11,127.08
  6. Step 6: Final answer
    x = 8,850.78

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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.