Home / 28,479.66-39,301.80-15,904.44

Finding the Fourth Proportional to 28,479.66, 39,301.80 and 15,904.44

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Solution

The fourth proportional to 28,479.66, 39,301.80 and 15,904.44 is: 21,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.66 : 39,301.80 = 15,904.44 : x
  2. Step 2: Convert to fraction form
    28,479.66/39,301.80 = 15,904.44/x
  3. Step 3: Cross multiply
    28,479.66x = 39,301.80 × 15,904.44
  4. Step 4: Simplify right side
    28,479.66x = 625,073,119.99
  5. Step 5: Solve for x
    x = 625,073,119.99/28,479.66
  6. Step 6: Final answer
    x = 21,948.05

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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.