Home / 21,171.47-29,217.69-11,740.05

Finding the Fourth Proportional to 21,171.47, 29,217.69 and 11,740.05

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Solution

The fourth proportional to 21,171.47, 29,217.69 and 11,740.05 is: 16,201.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.47 : 29,217.69 = 11,740.05 : x
  2. Step 2: Convert to fraction form
    21,171.47/29,217.69 = 11,740.05/x
  3. Step 3: Cross multiply
    21,171.47x = 29,217.69 × 11,740.05
  4. Step 4: Simplify right side
    21,171.47x = 343,017,141.48
  5. Step 5: Solve for x
    x = 343,017,141.48/21,171.47
  6. Step 6: Final answer
    x = 16,201.86

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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.