Home / 10,383.20-15,565.53-3,807.85

Finding the Fourth Proportional to 10,383.20, 15,565.53 and 3,807.85

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Solution

The fourth proportional to 10,383.20, 15,565.53 and 3,807.85 is: 5,708.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,383.20 : 15,565.53 = 3,807.85 : x
  2. Step 2: Convert to fraction form
    10,383.20/15,565.53 = 3,807.85/x
  3. Step 3: Cross multiply
    10,383.20x = 15,565.53 × 3,807.85
  4. Step 4: Simplify right side
    10,383.20x = 59,271,203.41
  5. Step 5: Solve for x
    x = 59,271,203.41/10,383.20
  6. Step 6: Final answer
    x = 5,708.38

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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.