Home / 21,332.82-29,439.94-11,901.18

Finding the Fourth Proportional to 21,332.82, 29,439.94 and 11,901.18

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Solution

The fourth proportional to 21,332.82, 29,439.94 and 11,901.18 is: 16,423.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.82 : 29,439.94 = 11,901.18 : x
  2. Step 2: Convert to fraction form
    21,332.82/29,439.94 = 11,901.18/x
  3. Step 3: Cross multiply
    21,332.82x = 29,439.94 × 11,901.18
  4. Step 4: Simplify right side
    21,332.82x = 350,370,025.13
  5. Step 5: Solve for x
    x = 350,370,025.13/21,332.82
  6. Step 6: Final answer
    x = 16,423.99

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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.