Home / 18,920.60-28,380.81-5,772.93

Finding the Fourth Proportional to 18,920.60, 28,380.81 and 5,772.93

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Solution

The fourth proportional to 18,920.60, 28,380.81 and 5,772.93 is: 8,659.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.60 : 28,380.81 = 5,772.93 : x
  2. Step 2: Convert to fraction form
    18,920.60/28,380.81 = 5,772.93/x
  3. Step 3: Cross multiply
    18,920.60x = 28,380.81 × 5,772.93
  4. Step 4: Simplify right side
    18,920.60x = 163,840,344.69
  5. Step 5: Solve for x
    x = 163,840,344.69/18,920.60
  6. Step 6: Final answer
    x = 8,659.36

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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.