Home / 28,100.38-42,149.57-7,040.60

Finding the Fourth Proportional to 28,100.38, 42,149.57 and 7,040.60

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Solution

The fourth proportional to 28,100.38, 42,149.57 and 7,040.60 is: 10,560.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.38 : 42,149.57 = 7,040.60 : x
  2. Step 2: Convert to fraction form
    28,100.38/42,149.57 = 7,040.60/x
  3. Step 3: Cross multiply
    28,100.38x = 42,149.57 × 7,040.60
  4. Step 4: Simplify right side
    28,100.38x = 296,758,069.40
  5. Step 5: Solve for x
    x = 296,758,069.40/28,100.38
  6. Step 6: Final answer
    x = 10,560.64

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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.