Home / 27,721.51-38,251.50-15,621.48

Finding the Fourth Proportional to 27,721.51, 38,251.50 and 15,621.48

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Solution

The fourth proportional to 27,721.51, 38,251.50 and 15,621.48 is: 21,555.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,721.51 : 38,251.50 = 15,621.48 : x
  2. Step 2: Convert to fraction form
    27,721.51/38,251.50 = 15,621.48/x
  3. Step 3: Cross multiply
    27,721.51x = 38,251.50 × 15,621.48
  4. Step 4: Simplify right side
    27,721.51x = 597,545,042.22
  5. Step 5: Solve for x
    x = 597,545,042.22/27,721.51
  6. Step 6: Final answer
    x = 21,555.28

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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.