Home / 21,304.66-29,402.62-12,809.56

Finding the Fourth Proportional to 21,304.66, 29,402.62 and 12,809.56

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Solution

The fourth proportional to 21,304.66, 29,402.62 and 12,809.56 is: 17,678.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.66 : 29,402.62 = 12,809.56 : x
  2. Step 2: Convert to fraction form
    21,304.66/29,402.62 = 12,809.56/x
  3. Step 3: Cross multiply
    21,304.66x = 29,402.62 × 12,809.56
  4. Step 4: Simplify right side
    21,304.66x = 376,634,625.05
  5. Step 5: Solve for x
    x = 376,634,625.05/21,304.66
  6. Step 6: Final answer
    x = 17,678.51

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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.