Home / 27,321.39-37,703.43-15,384.78

Finding the Fourth Proportional to 27,321.39, 37,703.43 and 15,384.78

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Solution

The fourth proportional to 27,321.39, 37,703.43 and 15,384.78 is: 21,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,321.39 : 37,703.43 = 15,384.78 : x
  2. Step 2: Convert to fraction form
    27,321.39/37,703.43 = 15,384.78/x
  3. Step 3: Cross multiply
    27,321.39x = 37,703.43 × 15,384.78
  4. Step 4: Simplify right side
    27,321.39x = 580,058,975.80
  5. Step 5: Solve for x
    x = 580,058,975.80/27,321.39
  6. Step 6: Final answer
    x = 21,230.95

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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.