Home / 22,721.72-31,353.74-13,288.44

Finding the Fourth Proportional to 22,721.72, 31,353.74 and 13,288.44

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Solution

The fourth proportional to 22,721.72, 31,353.74 and 13,288.44 is: 18,336.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.72 : 31,353.74 = 13,288.44 : x
  2. Step 2: Convert to fraction form
    22,721.72/31,353.74 = 13,288.44/x
  3. Step 3: Cross multiply
    22,721.72x = 31,353.74 × 13,288.44
  4. Step 4: Simplify right side
    22,721.72x = 416,642,292.77
  5. Step 5: Solve for x
    x = 416,642,292.77/22,721.72
  6. Step 6: Final answer
    x = 18,336.74

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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.