Home / 21,638.02-29,861.85-12,203.14

Finding the Fourth Proportional to 21,638.02, 29,861.85 and 12,203.14

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Solution

The fourth proportional to 21,638.02, 29,861.85 and 12,203.14 is: 16,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,638.02 : 29,861.85 = 12,203.14 : x
  2. Step 2: Convert to fraction form
    21,638.02/29,861.85 = 12,203.14/x
  3. Step 3: Cross multiply
    21,638.02x = 29,861.85 × 12,203.14
  4. Step 4: Simplify right side
    21,638.02x = 364,408,336.21
  5. Step 5: Solve for x
    x = 364,408,336.21/21,638.02
  6. Step 6: Final answer
    x = 16,841.11

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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.