Home / 28,778.15-39,719.97-19,341.24

Finding the Fourth Proportional to 28,778.15, 39,719.97 and 19,341.24

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Solution

The fourth proportional to 28,778.15, 39,719.97 and 19,341.24 is: 26,695.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.15 : 39,719.97 = 19,341.24 : x
  2. Step 2: Convert to fraction form
    28,778.15/39,719.97 = 19,341.24/x
  3. Step 3: Cross multiply
    28,778.15x = 39,719.97 × 19,341.24
  4. Step 4: Simplify right side
    28,778.15x = 768,233,472.56
  5. Step 5: Solve for x
    x = 768,233,472.56/28,778.15
  6. Step 6: Final answer
    x = 26,695.03

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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.