Home / 31,648.84-43,679.53-18,220.66

Finding the Fourth Proportional to 31,648.84, 43,679.53 and 18,220.66

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Solution

The fourth proportional to 31,648.84, 43,679.53 and 18,220.66 is: 25,146.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,648.84 : 43,679.53 = 18,220.66 : x
  2. Step 2: Convert to fraction form
    31,648.84/43,679.53 = 18,220.66/x
  3. Step 3: Cross multiply
    31,648.84x = 43,679.53 × 18,220.66
  4. Step 4: Simplify right side
    31,648.84x = 795,869,865.09
  5. Step 5: Solve for x
    x = 795,869,865.09/31,648.84
  6. Step 6: Final answer
    x = 25,146.89

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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.