Home / 21,972.60-32,942.70-9,482.40

Finding the Fourth Proportional to 21,972.60, 32,942.70 and 9,482.40

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Solution

The fourth proportional to 21,972.60, 32,942.70 and 9,482.40 is: 14,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.60 : 32,942.70 = 9,482.40 : x
  2. Step 2: Convert to fraction form
    21,972.60/32,942.70 = 9,482.40/x
  3. Step 3: Cross multiply
    21,972.60x = 32,942.70 × 9,482.40
  4. Step 4: Simplify right side
    21,972.60x = 312,375,858.48
  5. Step 5: Solve for x
    x = 312,375,858.48/21,972.60
  6. Step 6: Final answer
    x = 14,216.61

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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.