Home / 21,172.07-29,217.08-11,740.70

Finding the Fourth Proportional to 21,172.07, 29,217.08 and 11,740.70

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Solution

The fourth proportional to 21,172.07, 29,217.08 and 11,740.70 is: 16,201.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.07 : 29,217.08 = 11,740.70 : x
  2. Step 2: Convert to fraction form
    21,172.07/29,217.08 = 11,740.70/x
  3. Step 3: Cross multiply
    21,172.07x = 29,217.08 × 11,740.70
  4. Step 4: Simplify right side
    21,172.07x = 343,028,854.42
  5. Step 5: Solve for x
    x = 343,028,854.42/21,172.07
  6. Step 6: Final answer
    x = 16,201.96

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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.