Home / 20,740.68-28,617.30-11,787.48

Finding the Fourth Proportional to 20,740.68, 28,617.30 and 11,787.48

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Solution

The fourth proportional to 20,740.68, 28,617.30 and 11,787.48 is: 16,263.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.68 : 28,617.30 = 11,787.48 : x
  2. Step 2: Convert to fraction form
    20,740.68/28,617.30 = 11,787.48/x
  3. Step 3: Cross multiply
    20,740.68x = 28,617.30 × 11,787.48
  4. Step 4: Simplify right side
    20,740.68x = 337,325,851.40
  5. Step 5: Solve for x
    x = 337,325,851.40/20,740.68
  6. Step 6: Final answer
    x = 16,263.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.