Home / 28,505.08-42,766.26-20,201.16

Finding the Fourth Proportional to 28,505.08, 42,766.26 and 20,201.16

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Solution

The fourth proportional to 28,505.08, 42,766.26 and 20,201.16 is: 30,307.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.08 : 42,766.26 = 20,201.16 : x
  2. Step 2: Convert to fraction form
    28,505.08/42,766.26 = 20,201.16/x
  3. Step 3: Cross multiply
    28,505.08x = 42,766.26 × 20,201.16
  4. Step 4: Simplify right side
    28,505.08x = 863,928,060.86
  5. Step 5: Solve for x
    x = 863,928,060.86/28,505.08
  6. Step 6: Final answer
    x = 30,307.86

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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.