Home / 10,964.09-15,129.28-6,488.03

Finding the Fourth Proportional to 10,964.09, 15,129.28 and 6,488.03

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Solution

The fourth proportional to 10,964.09, 15,129.28 and 6,488.03 is: 8,952.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,964.09 : 15,129.28 = 6,488.03 : x
  2. Step 2: Convert to fraction form
    10,964.09/15,129.28 = 6,488.03/x
  3. Step 3: Cross multiply
    10,964.09x = 15,129.28 × 6,488.03
  4. Step 4: Simplify right side
    10,964.09x = 98,159,244.12
  5. Step 5: Solve for x
    x = 98,159,244.12/10,964.09
  6. Step 6: Final answer
    x = 8,952.79

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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.