Home / 31,176.40-46,764.78-10,399.84

Finding the Fourth Proportional to 31,176.40, 46,764.78 and 10,399.84

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Solution

The fourth proportional to 31,176.40, 46,764.78 and 10,399.84 is: 15,599.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,176.40 : 46,764.78 = 10,399.84 : x
  2. Step 2: Convert to fraction form
    31,176.40/46,764.78 = 10,399.84/x
  3. Step 3: Cross multiply
    31,176.40x = 46,764.78 × 10,399.84
  4. Step 4: Simplify right side
    31,176.40x = 486,346,229.64
  5. Step 5: Solve for x
    x = 486,346,229.64/31,176.40
  6. Step 6: Final answer
    x = 15,599.82

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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.