Home / 21,984.64-32,982.24-6,402.40

Finding the Fourth Proportional to 21,984.64, 32,982.24 and 6,402.40

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Solution

The fourth proportional to 21,984.64, 32,982.24 and 6,402.40 is: 9,605.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.64 : 32,982.24 = 6,402.40 : x
  2. Step 2: Convert to fraction form
    21,984.64/32,982.24 = 6,402.40/x
  3. Step 3: Cross multiply
    21,984.64x = 32,982.24 × 6,402.40
  4. Step 4: Simplify right side
    21,984.64x = 211,165,493.38
  5. Step 5: Solve for x
    x = 211,165,493.38/21,984.64
  6. Step 6: Final answer
    x = 9,605.14

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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.