Home / 22,792.89-31,454.78-12,721.28

Finding the Fourth Proportional to 22,792.89, 31,454.78 and 12,721.28

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Solution

The fourth proportional to 22,792.89, 31,454.78 and 12,721.28 is: 17,555.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,792.89 : 31,454.78 = 12,721.28 : x
  2. Step 2: Convert to fraction form
    22,792.89/31,454.78 = 12,721.28/x
  3. Step 3: Cross multiply
    22,792.89x = 31,454.78 × 12,721.28
  4. Step 4: Simplify right side
    22,792.89x = 400,145,063.72
  5. Step 5: Solve for x
    x = 400,145,063.72/22,792.89
  6. Step 6: Final answer
    x = 17,555.70

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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.