Home / 28,286.52-39,035.48-15,711.26

Finding the Fourth Proportional to 28,286.52, 39,035.48 and 15,711.26

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Solution

The fourth proportional to 28,286.52, 39,035.48 and 15,711.26 is: 21,681.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.52 : 39,035.48 = 15,711.26 : x
  2. Step 2: Convert to fraction form
    28,286.52/39,035.48 = 15,711.26/x
  3. Step 3: Cross multiply
    28,286.52x = 39,035.48 × 15,711.26
  4. Step 4: Simplify right side
    28,286.52x = 613,296,575.50
  5. Step 5: Solve for x
    x = 613,296,575.50/28,286.52
  6. Step 6: Final answer
    x = 21,681.58

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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.