Home / 28,149.75-38,847.87-15,574.50

Finding the Fourth Proportional to 28,149.75, 38,847.87 and 15,574.50

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Solution

The fourth proportional to 28,149.75, 38,847.87 and 15,574.50 is: 21,493.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.75 : 38,847.87 = 15,574.50 : x
  2. Step 2: Convert to fraction form
    28,149.75/38,847.87 = 15,574.50/x
  3. Step 3: Cross multiply
    28,149.75x = 38,847.87 × 15,574.50
  4. Step 4: Simplify right side
    28,149.75x = 605,036,151.32
  5. Step 5: Solve for x
    x = 605,036,151.32/28,149.75
  6. Step 6: Final answer
    x = 21,493.48

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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.