Home / 22,521.84-31,081.32-12,963.18

Finding the Fourth Proportional to 22,521.84, 31,081.32 and 12,963.18

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Solution

The fourth proportional to 22,521.84, 31,081.32 and 12,963.18 is: 17,889.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,521.84 : 31,081.32 = 12,963.18 : x
  2. Step 2: Convert to fraction form
    22,521.84/31,081.32 = 12,963.18/x
  3. Step 3: Cross multiply
    22,521.84x = 31,081.32 × 12,963.18
  4. Step 4: Simplify right side
    22,521.84x = 402,912,745.80
  5. Step 5: Solve for x
    x = 402,912,745.80/22,521.84
  6. Step 6: Final answer
    x = 17,889.87

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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.