Home / 28,712.96-42,787.84-28,471.04

Finding the Fourth Proportional to 28,712.96, 42,787.84 and 28,471.04

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Solution

The fourth proportional to 28,712.96, 42,787.84 and 28,471.04 is: 42,427.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.96 : 42,787.84 = 28,471.04 : x
  2. Step 2: Convert to fraction form
    28,712.96/42,787.84 = 28,471.04/x
  3. Step 3: Cross multiply
    28,712.96x = 42,787.84 × 28,471.04
  4. Step 4: Simplify right side
    28,712.96x = 1,218,214,304.15
  5. Step 5: Solve for x
    x = 1,218,214,304.15/28,712.96
  6. Step 6: Final answer
    x = 42,427.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.