Home / 28,084.20-42,126.30-7,307.70

Finding the Fourth Proportional to 28,084.20, 42,126.30 and 7,307.70

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Solution

The fourth proportional to 28,084.20, 42,126.30 and 7,307.70 is: 10,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084.20 : 42,126.30 = 7,307.70 : x
  2. Step 2: Convert to fraction form
    28,084.20/42,126.30 = 7,307.70/x
  3. Step 3: Cross multiply
    28,084.20x = 42,126.30 × 7,307.70
  4. Step 4: Simplify right side
    28,084.20x = 307,846,362.51
  5. Step 5: Solve for x
    x = 307,846,362.51/28,084.20
  6. Step 6: Final answer
    x = 10,961.55

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Similar ratio
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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.