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Finding the Fourth Proportional to 28,047.64, 42,071.44 and 8,326.18

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Solution

The fourth proportional to 28,047.64, 42,071.44 and 8,326.18 is: 12,489.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,047.64 : 42,071.44 = 8,326.18 : x
  2. Step 2: Convert to fraction form
    28,047.64/42,071.44 = 8,326.18/x
  3. Step 3: Cross multiply
    28,047.64x = 42,071.44 × 8,326.18
  4. Step 4: Simplify right side
    28,047.64x = 350,294,382.30
  5. Step 5: Solve for x
    x = 350,294,382.30/28,047.64
  6. Step 6: Final answer
    x = 12,489.26

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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.