Home / 21,568.14-32,339.45-8,405.15

Finding the Fourth Proportional to 21,568.14, 32,339.45 and 8,405.15

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Solution

The fourth proportional to 21,568.14, 32,339.45 and 8,405.15 is: 12,602.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.14 : 32,339.45 = 8,405.15 : x
  2. Step 2: Convert to fraction form
    21,568.14/32,339.45 = 8,405.15/x
  3. Step 3: Cross multiply
    21,568.14x = 32,339.45 × 8,405.15
  4. Step 4: Simplify right side
    21,568.14x = 271,817,787.48
  5. Step 5: Solve for x
    x = 271,817,787.48/21,568.14
  6. Step 6: Final answer
    x = 12,602.75

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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.