Home / 28,006.40-42,009.60-7,229.90

Finding the Fourth Proportional to 28,006.40, 42,009.60 and 7,229.90

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Solution

The fourth proportional to 28,006.40, 42,009.60 and 7,229.90 is: 10,844.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.40 : 42,009.60 = 7,229.90 : x
  2. Step 2: Convert to fraction form
    28,006.40/42,009.60 = 7,229.90/x
  3. Step 3: Cross multiply
    28,006.40x = 42,009.60 × 7,229.90
  4. Step 4: Simplify right side
    28,006.40x = 303,725,207.04
  5. Step 5: Solve for x
    x = 303,725,207.04/28,006.40
  6. Step 6: Final answer
    x = 10,844.85

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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.