Home / 28,289.30-39,039.17-15,540.44

Finding the Fourth Proportional to 28,289.30, 39,039.17 and 15,540.44

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Solution

The fourth proportional to 28,289.30, 39,039.17 and 15,540.44 is: 21,445.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.30 : 39,039.17 = 15,540.44 : x
  2. Step 2: Convert to fraction form
    28,289.30/39,039.17 = 15,540.44/x
  3. Step 3: Cross multiply
    28,289.30x = 39,039.17 × 15,540.44
  4. Step 4: Simplify right side
    28,289.30x = 606,685,606.14
  5. Step 5: Solve for x
    x = 606,685,606.14/28,289.30
  6. Step 6: Final answer
    x = 21,445.77

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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.