Home / 18,770.78-28,160.30-7,084.10

Finding the Fourth Proportional to 18,770.78, 28,160.30 and 7,084.10

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Solution

The fourth proportional to 18,770.78, 28,160.30 and 7,084.10 is: 10,627.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.78 : 28,160.30 = 7,084.10 : x
  2. Step 2: Convert to fraction form
    18,770.78/28,160.30 = 7,084.10/x
  3. Step 3: Cross multiply
    18,770.78x = 28,160.30 × 7,084.10
  4. Step 4: Simplify right side
    18,770.78x = 199,490,258.14
  5. Step 5: Solve for x
    x = 199,490,258.14/18,770.78
  6. Step 6: Final answer
    x = 10,627.70

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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.