Home / 20,528.60-30,827.97-12,259.89

Finding the Fourth Proportional to 20,528.60, 30,827.97 and 12,259.89

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Solution

The fourth proportional to 20,528.60, 30,827.97 and 12,259.89 is: 18,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.60 : 30,827.97 = 12,259.89 : x
  2. Step 2: Convert to fraction form
    20,528.60/30,827.97 = 12,259.89/x
  3. Step 3: Cross multiply
    20,528.60x = 30,827.97 × 12,259.89
  4. Step 4: Simplify right side
    20,528.60x = 377,947,521.12
  5. Step 5: Solve for x
    x = 377,947,521.12/20,528.60
  6. Step 6: Final answer
    x = 18,410.78

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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.