Home / 10,185.12-15,251.76-9,329.76

Finding the Fourth Proportional to 10,185.12, 15,251.76 and 9,329.76

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Solution

The fourth proportional to 10,185.12, 15,251.76 and 9,329.76 is: 13,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.12 : 15,251.76 = 9,329.76 : x
  2. Step 2: Convert to fraction form
    10,185.12/15,251.76 = 9,329.76/x
  3. Step 3: Cross multiply
    10,185.12x = 15,251.76 × 9,329.76
  4. Step 4: Simplify right side
    10,185.12x = 142,295,260.38
  5. Step 5: Solve for x
    x = 142,295,260.38/10,185.12
  6. Step 6: Final answer
    x = 13,970.90

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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.