Home / 21,100.12-29,125.49-12,151.19

Finding the Fourth Proportional to 21,100.12, 29,125.49 and 12,151.19

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Solution

The fourth proportional to 21,100.12, 29,125.49 and 12,151.19 is: 16,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.12 : 29,125.49 = 12,151.19 : x
  2. Step 2: Convert to fraction form
    21,100.12/29,125.49 = 12,151.19/x
  3. Step 3: Cross multiply
    21,100.12x = 29,125.49 × 12,151.19
  4. Step 4: Simplify right side
    21,100.12x = 353,909,408.40
  5. Step 5: Solve for x
    x = 353,909,408.40/21,100.12
  6. Step 6: Final answer
    x = 16,772.86

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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.