Home / 27,178.43-40,721.49-13,145.09

Finding the Fourth Proportional to 27,178.43, 40,721.49 and 13,145.09

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Solution

The fourth proportional to 27,178.43, 40,721.49 and 13,145.09 is: 19,695.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,178.43 : 40,721.49 = 13,145.09 : x
  2. Step 2: Convert to fraction form
    27,178.43/40,721.49 = 13,145.09/x
  3. Step 3: Cross multiply
    27,178.43x = 40,721.49 × 13,145.09
  4. Step 4: Simplify right side
    27,178.43x = 535,287,447.38
  5. Step 5: Solve for x
    x = 535,287,447.38/27,178.43
  6. Step 6: Final answer
    x = 19,695.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.