Home / 28,401.39-39,195.63-15,654.56

Finding the Fourth Proportional to 28,401.39, 39,195.63 and 15,654.56

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Solution

The fourth proportional to 28,401.39, 39,195.63 and 15,654.56 is: 21,604.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.39 : 39,195.63 = 15,654.56 : x
  2. Step 2: Convert to fraction form
    28,401.39/39,195.63 = 15,654.56/x
  3. Step 3: Cross multiply
    28,401.39x = 39,195.63 × 15,654.56
  4. Step 4: Simplify right side
    28,401.39x = 613,590,145.59
  5. Step 5: Solve for x
    x = 613,590,145.59/28,401.39
  6. Step 6: Final answer
    x = 21,604.23

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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.