Home / 21,912.48-32,827.20-13,008.96

Finding the Fourth Proportional to 21,912.48, 32,827.20 and 13,008.96

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Solution

The fourth proportional to 21,912.48, 32,827.20 and 13,008.96 is: 19,488.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.48 : 32,827.20 = 13,008.96 : x
  2. Step 2: Convert to fraction form
    21,912.48/32,827.20 = 13,008.96/x
  3. Step 3: Cross multiply
    21,912.48x = 32,827.20 × 13,008.96
  4. Step 4: Simplify right side
    21,912.48x = 427,047,731.71
  5. Step 5: Solve for x
    x = 427,047,731.71/21,912.48
  6. Step 6: Final answer
    x = 19,488.79

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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.