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Finding the Fourth Proportional to 21,955.34, 32,939.18 and 8,816.94

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Solution

The fourth proportional to 21,955.34, 32,939.18 and 8,816.94 is: 13,227.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.34 : 32,939.18 = 8,816.94 : x
  2. Step 2: Convert to fraction form
    21,955.34/32,939.18 = 8,816.94/x
  3. Step 3: Cross multiply
    21,955.34x = 32,939.18 × 8,816.94
  4. Step 4: Simplify right side
    21,955.34x = 290,422,762.69
  5. Step 5: Solve for x
    x = 290,422,762.69/21,955.34
  6. Step 6: Final answer
    x = 13,227.89

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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.