Home / 10,987.12-15,164.04-7,447.96

Finding the Fourth Proportional to 10,987.12, 15,164.04 and 7,447.96

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Solution

The fourth proportional to 10,987.12, 15,164.04 and 7,447.96 is: 10,279.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.12 : 15,164.04 = 7,447.96 : x
  2. Step 2: Convert to fraction form
    10,987.12/15,164.04 = 7,447.96/x
  3. Step 3: Cross multiply
    10,987.12x = 15,164.04 × 7,447.96
  4. Step 4: Simplify right side
    10,987.12x = 112,941,163.36
  5. Step 5: Solve for x
    x = 112,941,163.36/10,987.12
  6. Step 6: Final answer
    x = 10,279.41

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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.