Home / 10,176.40-15,265.44-2,780.92

Finding the Fourth Proportional to 10,176.40, 15,265.44 and 2,780.92

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Solution

The fourth proportional to 10,176.40, 15,265.44 and 2,780.92 is: 4,171.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,176.40 : 15,265.44 = 2,780.92 : x
  2. Step 2: Convert to fraction form
    10,176.40/15,265.44 = 2,780.92/x
  3. Step 3: Cross multiply
    10,176.40x = 15,265.44 × 2,780.92
  4. Step 4: Simplify right side
    10,176.40x = 42,451,967.40
  5. Step 5: Solve for x
    x = 42,451,967.40/10,176.40
  6. Step 6: Final answer
    x = 4,171.61

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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.