Home / 28,870.38-43,301.34-7,811.64

Finding the Fourth Proportional to 28,870.38, 43,301.34 and 7,811.64

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Solution

The fourth proportional to 28,870.38, 43,301.34 and 7,811.64 is: 11,716.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.38 : 43,301.34 = 7,811.64 : x
  2. Step 2: Convert to fraction form
    28,870.38/43,301.34 = 7,811.64/x
  3. Step 3: Cross multiply
    28,870.38x = 43,301.34 × 7,811.64
  4. Step 4: Simplify right side
    28,870.38x = 338,254,479.60
  5. Step 5: Solve for x
    x = 338,254,479.60/28,870.38
  6. Step 6: Final answer
    x = 11,716.32

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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.