Home / 28,358.96-42,498.12-20,904.80

Finding the Fourth Proportional to 28,358.96, 42,498.12 and 20,904.80

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Solution

The fourth proportional to 28,358.96, 42,498.12 and 20,904.80 is: 31,327.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.96 : 42,498.12 = 20,904.80 : x
  2. Step 2: Convert to fraction form
    28,358.96/42,498.12 = 20,904.80/x
  3. Step 3: Cross multiply
    28,358.96x = 42,498.12 × 20,904.80
  4. Step 4: Simplify right side
    28,358.96x = 888,414,698.98
  5. Step 5: Solve for x
    x = 888,414,698.98/28,358.96
  6. Step 6: Final answer
    x = 31,327.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.