Home / 21,380.16-32,018.40-14,787.84

Finding the Fourth Proportional to 21,380.16, 32,018.40 and 14,787.84

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Solution

The fourth proportional to 21,380.16, 32,018.40 and 14,787.84 is: 22,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.16 : 32,018.40 = 14,787.84 : x
  2. Step 2: Convert to fraction form
    21,380.16/32,018.40 = 14,787.84/x
  3. Step 3: Cross multiply
    21,380.16x = 32,018.40 × 14,787.84
  4. Step 4: Simplify right side
    21,380.16x = 473,482,976.26
  5. Step 5: Solve for x
    x = 473,482,976.26/21,380.16
  6. Step 6: Final answer
    x = 22,145.90

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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.