Home / 21,531.67-29,728.20-19,255.94

Finding the Fourth Proportional to 21,531.67, 29,728.20 and 19,255.94

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Solution

The fourth proportional to 21,531.67, 29,728.20 and 19,255.94 is: 26,586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.67 : 29,728.20 = 19,255.94 : x
  2. Step 2: Convert to fraction form
    21,531.67/29,728.20 = 19,255.94/x
  3. Step 3: Cross multiply
    21,531.67x = 29,728.20 × 19,255.94
  4. Step 4: Simplify right side
    21,531.67x = 572,444,190.59
  5. Step 5: Solve for x
    x = 572,444,190.59/21,531.67
  6. Step 6: Final answer
    x = 26,586.16

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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.