Home / 15,815.20-23,703.60-7,040.80

Finding the Fourth Proportional to 15,815.20, 23,703.60 and 7,040.80

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Solution

The fourth proportional to 15,815.20, 23,703.60 and 7,040.80 is: 10,552.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.20 : 23,703.60 = 7,040.80 : x
  2. Step 2: Convert to fraction form
    15,815.20/23,703.60 = 7,040.80/x
  3. Step 3: Cross multiply
    15,815.20x = 23,703.60 × 7,040.80
  4. Step 4: Simplify right side
    15,815.20x = 166,892,306.88
  5. Step 5: Solve for x
    x = 166,892,306.88/15,815.20
  6. Step 6: Final answer
    x = 10,552.65

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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.