Home / 21,476.88-29,638.35-11,916.95

Finding the Fourth Proportional to 21,476.88, 29,638.35 and 11,916.95

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Solution

The fourth proportional to 21,476.88, 29,638.35 and 11,916.95 is: 16,445.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476.88 : 29,638.35 = 11,916.95 : x
  2. Step 2: Convert to fraction form
    21,476.88/29,638.35 = 11,916.95/x
  3. Step 3: Cross multiply
    21,476.88x = 29,638.35 × 11,916.95
  4. Step 4: Simplify right side
    21,476.88x = 353,198,586.84
  5. Step 5: Solve for x
    x = 353,198,586.84/21,476.88
  6. Step 6: Final answer
    x = 16,445.53

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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.