Home / 21,099.22-29,108.13-12,144.58

Finding the Fourth Proportional to 21,099.22, 29,108.13 and 12,144.58

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Solution

The fourth proportional to 21,099.22, 29,108.13 and 12,144.58 is: 16,754.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.22 : 29,108.13 = 12,144.58 : x
  2. Step 2: Convert to fraction form
    21,099.22/29,108.13 = 12,144.58/x
  3. Step 3: Cross multiply
    21,099.22x = 29,108.13 × 12,144.58
  4. Step 4: Simplify right side
    21,099.22x = 353,506,013.44
  5. Step 5: Solve for x
    x = 353,506,013.44/21,099.22
  6. Step 6: Final answer
    x = 16,754.46

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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.