Home / 28,489.23-42,729.87-7,427.55

Finding the Fourth Proportional to 28,489.23, 42,729.87 and 7,427.55

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Solution

The fourth proportional to 28,489.23, 42,729.87 and 7,427.55 is: 11,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.23 : 42,729.87 = 7,427.55 : x
  2. Step 2: Convert to fraction form
    28,489.23/42,729.87 = 7,427.55/x
  3. Step 3: Cross multiply
    28,489.23x = 42,729.87 × 7,427.55
  4. Step 4: Simplify right side
    28,489.23x = 317,378,245.92
  5. Step 5: Solve for x
    x = 317,378,245.92/28,489.23
  6. Step 6: Final answer
    x = 11,140.29

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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.