Home / 21,972.84-32,964.12-6,389.16

Finding the Fourth Proportional to 21,972.84, 32,964.12 and 6,389.16

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Solution

The fourth proportional to 21,972.84, 32,964.12 and 6,389.16 is: 9,585.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.84 : 32,964.12 = 6,389.16 : x
  2. Step 2: Convert to fraction form
    21,972.84/32,964.12 = 6,389.16/x
  3. Step 3: Cross multiply
    21,972.84x = 32,964.12 × 6,389.16
  4. Step 4: Simplify right side
    21,972.84x = 210,613,036.94
  5. Step 5: Solve for x
    x = 210,613,036.94/21,972.84
  6. Step 6: Final answer
    x = 9,585.15

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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.