Home / 21,787.92-32,689.80-13,458.24

Finding the Fourth Proportional to 21,787.92, 32,689.80 and 13,458.24

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Solution

The fourth proportional to 21,787.92, 32,689.80 and 13,458.24 is: 20,192.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.92 : 32,689.80 = 13,458.24 : x
  2. Step 2: Convert to fraction form
    21,787.92/32,689.80 = 13,458.24/x
  3. Step 3: Cross multiply
    21,787.92x = 32,689.80 × 13,458.24
  4. Step 4: Simplify right side
    21,787.92x = 439,947,173.95
  5. Step 5: Solve for x
    x = 439,947,173.95/21,787.92
  6. Step 6: Final answer
    x = 20,192.25

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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.