Home / 21,282.12-29,356.01-15,304.32

Finding the Fourth Proportional to 21,282.12, 29,356.01 and 15,304.32

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Solution

The fourth proportional to 21,282.12, 29,356.01 and 15,304.32 is: 21,110.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.12 : 29,356.01 = 15,304.32 : x
  2. Step 2: Convert to fraction form
    21,282.12/29,356.01 = 15,304.32/x
  3. Step 3: Cross multiply
    21,282.12x = 29,356.01 × 15,304.32
  4. Step 4: Simplify right side
    21,282.12x = 449,273,809.22
  5. Step 5: Solve for x
    x = 449,273,809.22/21,282.12
  6. Step 6: Final answer
    x = 21,110.39

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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.