Home / 21,801.51-30,078.32-14,252.18

Finding the Fourth Proportional to 21,801.51, 30,078.32 and 14,252.18

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Solution

The fourth proportional to 21,801.51, 30,078.32 and 14,252.18 is: 19,662.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,801.51 : 30,078.32 = 14,252.18 : x
  2. Step 2: Convert to fraction form
    21,801.51/30,078.32 = 14,252.18/x
  3. Step 3: Cross multiply
    21,801.51x = 30,078.32 × 14,252.18
  4. Step 4: Simplify right side
    21,801.51x = 428,681,409.09
  5. Step 5: Solve for x
    x = 428,681,409.09/21,801.51
  6. Step 6: Final answer
    x = 19,662.92

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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.