Home / 21,901.07-30,223.47-11,965.07

Finding the Fourth Proportional to 21,901.07, 30,223.47 and 11,965.07

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Solution

The fourth proportional to 21,901.07, 30,223.47 and 11,965.07 is: 16,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.07 : 30,223.47 = 11,965.07 : x
  2. Step 2: Convert to fraction form
    21,901.07/30,223.47 = 11,965.07/x
  3. Step 3: Cross multiply
    21,901.07x = 30,223.47 × 11,965.07
  4. Step 4: Simplify right side
    21,901.07x = 361,625,783.08
  5. Step 5: Solve for x
    x = 361,625,783.08/21,901.07
  6. Step 6: Final answer
    x = 16,511.79

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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.