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Finding the Fourth Proportional to 21,939.65, 32,912.91 and 9,463.22

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Solution

The fourth proportional to 21,939.65, 32,912.91 and 9,463.22 is: 14,196.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.65 : 32,912.91 = 9,463.22 : x
  2. Step 2: Convert to fraction form
    21,939.65/32,912.91 = 9,463.22/x
  3. Step 3: Cross multiply
    21,939.65x = 32,912.91 × 9,463.22
  4. Step 4: Simplify right side
    21,939.65x = 311,461,943.61
  5. Step 5: Solve for x
    x = 311,461,943.61/21,939.65
  6. Step 6: Final answer
    x = 14,196.31

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1.5x scale

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.