Home / 31,728.06-43,784.07-17,580.78

Finding the Fourth Proportional to 31,728.06, 43,784.07 and 17,580.78

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Solution

The fourth proportional to 31,728.06, 43,784.07 and 17,580.78 is: 24,261.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.06 : 43,784.07 = 17,580.78 : x
  2. Step 2: Convert to fraction form
    31,728.06/43,784.07 = 17,580.78/x
  3. Step 3: Cross multiply
    31,728.06x = 43,784.07 × 17,580.78
  4. Step 4: Simplify right side
    31,728.06x = 769,758,102.17
  5. Step 5: Solve for x
    x = 769,758,102.17/31,728.06
  6. Step 6: Final answer
    x = 24,261.11

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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.