Home / 28,550.58-42,808.86-21,173.10

Finding the Fourth Proportional to 28,550.58, 42,808.86 and 21,173.10

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Solution

The fourth proportional to 28,550.58, 42,808.86 and 21,173.10 is: 31,747.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,550.58 : 42,808.86 = 21,173.10 : x
  2. Step 2: Convert to fraction form
    28,550.58/42,808.86 = 21,173.10/x
  3. Step 3: Cross multiply
    28,550.58x = 42,808.86 × 21,173.10
  4. Step 4: Simplify right side
    28,550.58x = 906,396,273.67
  5. Step 5: Solve for x
    x = 906,396,273.67/28,550.58
  6. Step 6: Final answer
    x = 31,747.04

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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.