Home / 22,149.84-30,565.08-12,721.44

Finding the Fourth Proportional to 22,149.84, 30,565.08 and 12,721.44

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Solution

The fourth proportional to 22,149.84, 30,565.08 and 12,721.44 is: 17,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,149.84 : 30,565.08 = 12,721.44 : x
  2. Step 2: Convert to fraction form
    22,149.84/30,565.08 = 12,721.44/x
  3. Step 3: Cross multiply
    22,149.84x = 30,565.08 × 12,721.44
  4. Step 4: Simplify right side
    22,149.84x = 388,831,831.32
  5. Step 5: Solve for x
    x = 388,831,831.32/22,149.84
  6. Step 6: Final answer
    x = 17,554.61

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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.