Home / 18,500.79-25,530.57-10,116.75

Finding the Fourth Proportional to 18,500.79, 25,530.57 and 10,116.75

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Solution

The fourth proportional to 18,500.79, 25,530.57 and 10,116.75 is: 13,960.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.79 : 25,530.57 = 10,116.75 : x
  2. Step 2: Convert to fraction form
    18,500.79/25,530.57 = 10,116.75/x
  3. Step 3: Cross multiply
    18,500.79x = 25,530.57 × 10,116.75
  4. Step 4: Simplify right side
    18,500.79x = 258,286,394.05
  5. Step 5: Solve for x
    x = 258,286,394.05/18,500.79
  6. Step 6: Final answer
    x = 13,960.83

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Half scale
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Double scale
Find fourth proportional to 18,501.79, 25,531.95 and 10,117.75
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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.