Home / 28,740.70-43,123.20-18,218.80

Finding the Fourth Proportional to 28,740.70, 43,123.20 and 18,218.80

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Solution

The fourth proportional to 28,740.70, 43,123.20 and 18,218.80 is: 27,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740.70 : 43,123.20 = 18,218.80 : x
  2. Step 2: Convert to fraction form
    28,740.70/43,123.20 = 18,218.80/x
  3. Step 3: Cross multiply
    28,740.70x = 43,123.20 × 18,218.80
  4. Step 4: Simplify right side
    28,740.70x = 785,652,956.16
  5. Step 5: Solve for x
    x = 785,652,956.16/28,740.70
  6. Step 6: Final answer
    x = 27,335.90

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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.