Home / 28,479.88-39,302.84-15,904.62

Finding the Fourth Proportional to 28,479.88, 39,302.84 and 15,904.62

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Solution

The fourth proportional to 28,479.88, 39,302.84 and 15,904.62 is: 21,948.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.88 : 39,302.84 = 15,904.62 : x
  2. Step 2: Convert to fraction form
    28,479.88/39,302.84 = 15,904.62/x
  3. Step 3: Cross multiply
    28,479.88x = 39,302.84 × 15,904.62
  4. Step 4: Simplify right side
    28,479.88x = 625,096,735.12
  5. Step 5: Solve for x
    x = 625,096,735.12/28,479.88
  6. Step 6: Final answer
    x = 21,948.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.