Home / 21,885.12-32,827.68-13,109.04

Finding the Fourth Proportional to 21,885.12, 32,827.68 and 13,109.04

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Solution

The fourth proportional to 21,885.12, 32,827.68 and 13,109.04 is: 19,663.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.12 : 32,827.68 = 13,109.04 : x
  2. Step 2: Convert to fraction form
    21,885.12/32,827.68 = 13,109.04/x
  3. Step 3: Cross multiply
    21,885.12x = 32,827.68 × 13,109.04
  4. Step 4: Simplify right side
    21,885.12x = 430,339,370.23
  5. Step 5: Solve for x
    x = 430,339,370.23/21,885.12
  6. Step 6: Final answer
    x = 19,663.56

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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.