Home / 28,449.70-39,254.97-15,872.02

Finding the Fourth Proportional to 28,449.70, 39,254.97 and 15,872.02

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Solution

The fourth proportional to 28,449.70, 39,254.97 and 15,872.02 is: 21,900.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.70 : 39,254.97 = 15,872.02 : x
  2. Step 2: Convert to fraction form
    28,449.70/39,254.97 = 15,872.02/x
  3. Step 3: Cross multiply
    28,449.70x = 39,254.97 × 15,872.02
  4. Step 4: Simplify right side
    28,449.70x = 623,055,668.94
  5. Step 5: Solve for x
    x = 623,055,668.94/28,449.70
  6. Step 6: Final answer
    x = 21,900.25

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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.