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Finding the Fourth Proportional to 21,701.22, 29,948.49 and 12,269.22

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Solution

The fourth proportional to 21,701.22, 29,948.49 and 12,269.22 is: 16,931.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,701.22 : 29,948.49 = 12,269.22 : x
  2. Step 2: Convert to fraction form
    21,701.22/29,948.49 = 12,269.22/x
  3. Step 3: Cross multiply
    21,701.22x = 29,948.49 × 12,269.22
  4. Step 4: Simplify right side
    21,701.22x = 367,444,612.48
  5. Step 5: Solve for x
    x = 367,444,612.48/21,701.22
  6. Step 6: Final answer
    x = 16,931.98

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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.