Home / 21,870.60-32,820.38-12,016.75

Finding the Fourth Proportional to 21,870.60, 32,820.38 and 12,016.75

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Solution

The fourth proportional to 21,870.60, 32,820.38 and 12,016.75 is: 18,033.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,870.60 : 32,820.38 = 12,016.75 : x
  2. Step 2: Convert to fraction form
    21,870.60/32,820.38 = 12,016.75/x
  3. Step 3: Cross multiply
    21,870.60x = 32,820.38 × 12,016.75
  4. Step 4: Simplify right side
    21,870.60x = 394,394,301.37
  5. Step 5: Solve for x
    x = 394,394,301.37/21,870.60
  6. Step 6: Final answer
    x = 18,033.08

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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.