Home / 21,156.68-29,194.89-11,724.50

Finding the Fourth Proportional to 21,156.68, 29,194.89 and 11,724.50

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Solution

The fourth proportional to 21,156.68, 29,194.89 and 11,724.50 is: 16,179.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.68 : 29,194.89 = 11,724.50 : x
  2. Step 2: Convert to fraction form
    21,156.68/29,194.89 = 11,724.50/x
  3. Step 3: Cross multiply
    21,156.68x = 29,194.89 × 11,724.50
  4. Step 4: Simplify right side
    21,156.68x = 342,295,487.81
  5. Step 5: Solve for x
    x = 342,295,487.81/21,156.68
  6. Step 6: Final answer
    x = 16,179.07

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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.