Home / 21,699.12-32,548.68-20,591.04

Finding the Fourth Proportional to 21,699.12, 32,548.68 and 20,591.04

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Solution

The fourth proportional to 21,699.12, 32,548.68 and 20,591.04 is: 30,886.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,699.12 : 32,548.68 = 20,591.04 : x
  2. Step 2: Convert to fraction form
    21,699.12/32,548.68 = 20,591.04/x
  3. Step 3: Cross multiply
    21,699.12x = 32,548.68 × 20,591.04
  4. Step 4: Simplify right side
    21,699.12x = 670,211,171.83
  5. Step 5: Solve for x
    x = 670,211,171.83/21,699.12
  6. Step 6: Final answer
    x = 30,886.56

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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.