Home / 10,188.12-15,251.88-9,119.01

Finding the Fourth Proportional to 10,188.12, 15,251.88 and 9,119.01

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Solution

The fourth proportional to 10,188.12, 15,251.88 and 9,119.01 is: 13,651.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,188.12 : 15,251.88 = 9,119.01 : x
  2. Step 2: Convert to fraction form
    10,188.12/15,251.88 = 9,119.01/x
  3. Step 3: Cross multiply
    10,188.12x = 15,251.88 × 9,119.01
  4. Step 4: Simplify right side
    10,188.12x = 139,082,046.24
  5. Step 5: Solve for x
    x = 139,082,046.24/10,188.12
  6. Step 6: Final answer
    x = 13,651.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.