Home / 21,972.16-32,963.10-6,391

Finding the Fourth Proportional to 21,972.16, 32,963.10 and 6,391

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Solution

The fourth proportional to 21,972.16, 32,963.10 and 6,391 is: 9,587.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.16 : 32,963.10 = 6,391 : x
  2. Step 2: Convert to fraction form
    21,972.16/32,963.10 = 6,391/x
  3. Step 3: Cross multiply
    21,972.16x = 32,963.10 × 6,391
  4. Step 4: Simplify right side
    21,972.16x = 210,667,172.10
  5. Step 5: Solve for x
    x = 210,667,172.10/21,972.16
  6. Step 6: Final answer
    x = 9,587.91

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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.