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Finding the Fourth Proportional to 18,382.56, 25,368.08 and 9,999.04

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Solution

The fourth proportional to 18,382.56, 25,368.08 and 9,999.04 is: 13,798.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,382.56 : 25,368.08 = 9,999.04 : x
  2. Step 2: Convert to fraction form
    18,382.56/25,368.08 = 9,999.04/x
  3. Step 3: Cross multiply
    18,382.56x = 25,368.08 × 9,999.04
  4. Step 4: Simplify right side
    18,382.56x = 253,656,446.64
  5. Step 5: Solve for x
    x = 253,656,446.64/18,382.56
  6. Step 6: Final answer
    x = 13,798.76

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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.