Home / 22,792.39-31,454.09-12,720.78

Finding the Fourth Proportional to 22,792.39, 31,454.09 and 12,720.78

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Solution

The fourth proportional to 22,792.39, 31,454.09 and 12,720.78 is: 17,555.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,792.39 : 31,454.09 = 12,720.78 : x
  2. Step 2: Convert to fraction form
    22,792.39/31,454.09 = 12,720.78/x
  3. Step 3: Cross multiply
    22,792.39x = 31,454.09 × 12,720.78
  4. Step 4: Simplify right side
    22,792.39x = 400,120,543.09
  5. Step 5: Solve for x
    x = 400,120,543.09/22,792.39
  6. Step 6: Final answer
    x = 17,555.01

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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.