Home / 28,265.10-42,439.28-15,809.54

Finding the Fourth Proportional to 28,265.10, 42,439.28 and 15,809.54

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Solution

The fourth proportional to 28,265.10, 42,439.28 and 15,809.54 is: 23,737.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265.10 : 42,439.28 = 15,809.54 : x
  2. Step 2: Convert to fraction form
    28,265.10/42,439.28 = 15,809.54/x
  3. Step 3: Cross multiply
    28,265.10x = 42,439.28 × 15,809.54
  4. Step 4: Simplify right side
    28,265.10x = 670,945,494.73
  5. Step 5: Solve for x
    x = 670,945,494.73/28,265.10
  6. Step 6: Final answer
    x = 23,737.59

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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.