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Finding the Fourth Proportional to 15,087.49, 20,821.08 and 8,373.02

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Solution

The fourth proportional to 15,087.49, 20,821.08 and 8,373.02 is: 11,554.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,087.49 : 20,821.08 = 8,373.02 : x
  2. Step 2: Convert to fraction form
    15,087.49/20,821.08 = 8,373.02/x
  3. Step 3: Cross multiply
    15,087.49x = 20,821.08 × 8,373.02
  4. Step 4: Simplify right side
    15,087.49x = 174,335,293.03
  5. Step 5: Solve for x
    x = 174,335,293.03/15,087.49
  6. Step 6: Final answer
    x = 11,554.96

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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.