Home / 20,382.04-30,546.74-9,129.16

Finding the Fourth Proportional to 20,382.04, 30,546.74 and 9,129.16

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Solution

The fourth proportional to 20,382.04, 30,546.74 and 9,129.16 is: 13,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.04 : 30,546.74 = 9,129.16 : x
  2. Step 2: Convert to fraction form
    20,382.04/30,546.74 = 9,129.16/x
  3. Step 3: Cross multiply
    20,382.04x = 30,546.74 × 9,129.16
  4. Step 4: Simplify right side
    20,382.04x = 278,866,076.94
  5. Step 5: Solve for x
    x = 278,866,076.94/20,382.04
  6. Step 6: Final answer
    x = 13,681.95

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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.