Home / 22,721.30-31,356.30-13,763.72

Finding the Fourth Proportional to 22,721.30, 31,356.30 and 13,763.72

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Solution

The fourth proportional to 22,721.30, 31,356.30 and 13,763.72 is: 18,994.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.30 : 31,356.30 = 13,763.72 : x
  2. Step 2: Convert to fraction form
    22,721.30/31,356.30 = 13,763.72/x
  3. Step 3: Cross multiply
    22,721.30x = 31,356.30 × 13,763.72
  4. Step 4: Simplify right side
    22,721.30x = 431,579,333.44
  5. Step 5: Solve for x
    x = 431,579,333.44/22,721.30
  6. Step 6: Final answer
    x = 18,994.48

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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.