Home / 21,022.71-29,009.86-11,591.07

Finding the Fourth Proportional to 21,022.71, 29,009.86 and 11,591.07

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Solution

The fourth proportional to 21,022.71, 29,009.86 and 11,591.07 is: 15,994.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.71 : 29,009.86 = 11,591.07 : x
  2. Step 2: Convert to fraction form
    21,022.71/29,009.86 = 11,591.07/x
  3. Step 3: Cross multiply
    21,022.71x = 29,009.86 × 11,591.07
  4. Step 4: Simplify right side
    21,022.71x = 336,255,288.97
  5. Step 5: Solve for x
    x = 336,255,288.97/21,022.71
  6. Step 6: Final answer
    x = 15,994.86

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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.