Home / 28,346.24-39,100.16-20,398.92

Finding the Fourth Proportional to 28,346.24, 39,100.16 and 20,398.92

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Solution

The fourth proportional to 28,346.24, 39,100.16 and 20,398.92 is: 28,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,346.24 : 39,100.16 = 20,398.92 : x
  2. Step 2: Convert to fraction form
    28,346.24/39,100.16 = 20,398.92/x
  3. Step 3: Cross multiply
    28,346.24x = 39,100.16 × 20,398.92
  4. Step 4: Simplify right side
    28,346.24x = 797,600,933.83
  5. Step 5: Solve for x
    x = 797,600,933.83/28,346.24
  6. Step 6: Final answer
    x = 28,137.81

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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.