Home / 21,899.84-30,221.77-11,828.28

Finding the Fourth Proportional to 21,899.84, 30,221.77 and 11,828.28

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Solution

The fourth proportional to 21,899.84, 30,221.77 and 11,828.28 is: 16,323.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.84 : 30,221.77 = 11,828.28 : x
  2. Step 2: Convert to fraction form
    21,899.84/30,221.77 = 11,828.28/x
  3. Step 3: Cross multiply
    21,899.84x = 30,221.77 × 11,828.28
  4. Step 4: Simplify right side
    21,899.84x = 357,471,557.66
  5. Step 5: Solve for x
    x = 357,471,557.66/21,899.84
  6. Step 6: Final answer
    x = 16,323.02

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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.