Home / 21,555.60-32,143.04-18,933.84

Finding the Fourth Proportional to 21,555.60, 32,143.04 and 18,933.84

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Solution

The fourth proportional to 21,555.60, 32,143.04 and 18,933.84 is: 28,233.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.60 : 32,143.04 = 18,933.84 : x
  2. Step 2: Convert to fraction form
    21,555.60/32,143.04 = 18,933.84/x
  3. Step 3: Cross multiply
    21,555.60x = 32,143.04 × 18,933.84
  4. Step 4: Simplify right side
    21,555.60x = 608,591,081.80
  5. Step 5: Solve for x
    x = 608,591,081.80/21,555.60
  6. Step 6: Final answer
    x = 28,233.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.