Home / 21,899.19-30,220.87-11,827.63

Finding the Fourth Proportional to 21,899.19, 30,220.87 and 11,827.63

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Solution

The fourth proportional to 21,899.19, 30,220.87 and 11,827.63 is: 16,322.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.19 : 30,220.87 = 11,827.63 : x
  2. Step 2: Convert to fraction form
    21,899.19/30,220.87 = 11,827.63/x
  3. Step 3: Cross multiply
    21,899.19x = 30,220.87 × 11,827.63
  4. Step 4: Simplify right side
    21,899.19x = 357,441,268.64
  5. Step 5: Solve for x
    x = 357,441,268.64/21,899.19
  6. Step 6: Final answer
    x = 16,322.12

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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.