Home / 28,447.50-39,257.55-15,872.25

Finding the Fourth Proportional to 28,447.50, 39,257.55 and 15,872.25

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Solution

The fourth proportional to 28,447.50, 39,257.55 and 15,872.25 is: 21,903.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.50 : 39,257.55 = 15,872.25 : x
  2. Step 2: Convert to fraction form
    28,447.50/39,257.55 = 15,872.25/x
  3. Step 3: Cross multiply
    28,447.50x = 39,257.55 × 15,872.25
  4. Step 4: Simplify right side
    28,447.50x = 623,105,647.99
  5. Step 5: Solve for x
    x = 623,105,647.99/28,447.50
  6. Step 6: Final answer
    x = 21,903.71

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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.