Home / 28,654.39-39,545.40-15,908.35

Finding the Fourth Proportional to 28,654.39, 39,545.40 and 15,908.35

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Solution

The fourth proportional to 28,654.39, 39,545.40 and 15,908.35 is: 21,954.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.39 : 39,545.40 = 15,908.35 : x
  2. Step 2: Convert to fraction form
    28,654.39/39,545.40 = 15,908.35/x
  3. Step 3: Cross multiply
    28,654.39x = 39,545.40 × 15,908.35
  4. Step 4: Simplify right side
    28,654.39x = 629,102,064.09
  5. Step 5: Solve for x
    x = 629,102,064.09/28,654.39
  6. Step 6: Final answer
    x = 21,954.82

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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.