Home / 21,218.73-29,281.78-11,657.08

Finding the Fourth Proportional to 21,218.73, 29,281.78 and 11,657.08

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Solution

The fourth proportional to 21,218.73, 29,281.78 and 11,657.08 is: 16,086.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.73 : 29,281.78 = 11,657.08 : x
  2. Step 2: Convert to fraction form
    21,218.73/29,281.78 = 11,657.08/x
  3. Step 3: Cross multiply
    21,218.73x = 29,281.78 × 11,657.08
  4. Step 4: Simplify right side
    21,218.73x = 341,340,052.00
  5. Step 5: Solve for x
    x = 341,340,052.00/21,218.73
  6. Step 6: Final answer
    x = 16,086.73

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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.