Home / 28,487.64-42,693.92-20,616.54

Finding the Fourth Proportional to 28,487.64, 42,693.92 and 20,616.54

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Solution

The fourth proportional to 28,487.64, 42,693.92 and 20,616.54 is: 30,897.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.64 : 42,693.92 = 20,616.54 : x
  2. Step 2: Convert to fraction form
    28,487.64/42,693.92 = 20,616.54/x
  3. Step 3: Cross multiply
    28,487.64x = 42,693.92 × 20,616.54
  4. Step 4: Simplify right side
    28,487.64x = 880,200,909.44
  5. Step 5: Solve for x
    x = 880,200,909.44/28,487.64
  6. Step 6: Final answer
    x = 30,897.64

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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.