Home / 11,101.24-15,322.80-6,387.04

Finding the Fourth Proportional to 11,101.24, 15,322.80 and 6,387.04

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Solution

The fourth proportional to 11,101.24, 15,322.80 and 6,387.04 is: 8,815.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,101.24 : 15,322.80 = 6,387.04 : x
  2. Step 2: Convert to fraction form
    11,101.24/15,322.80 = 6,387.04/x
  3. Step 3: Cross multiply
    11,101.24x = 15,322.80 × 6,387.04
  4. Step 4: Simplify right side
    11,101.24x = 97,867,336.51
  5. Step 5: Solve for x
    x = 97,867,336.51/11,101.24
  6. Step 6: Final answer
    x = 8,815.89

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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.