Home / 28,656.39-39,548.16-15,910.35

Finding the Fourth Proportional to 28,656.39, 39,548.16 and 15,910.35

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Solution

The fourth proportional to 28,656.39, 39,548.16 and 15,910.35 is: 21,957.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.39 : 39,548.16 = 15,910.35 : x
  2. Step 2: Convert to fraction form
    28,656.39/39,548.16 = 15,910.35/x
  3. Step 3: Cross multiply
    28,656.39x = 39,548.16 × 15,910.35
  4. Step 4: Simplify right side
    28,656.39x = 629,225,067.46
  5. Step 5: Solve for x
    x = 629,225,067.46/28,656.39
  6. Step 6: Final answer
    x = 21,957.58

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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.