Home / 21,304.54-29,402.45-12,809.43

Finding the Fourth Proportional to 21,304.54, 29,402.45 and 12,809.43

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Solution

The fourth proportional to 21,304.54, 29,402.45 and 12,809.43 is: 17,678.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.54 : 29,402.45 = 12,809.43 : x
  2. Step 2: Convert to fraction form
    21,304.54/29,402.45 = 12,809.43/x
  3. Step 3: Cross multiply
    21,304.54x = 29,402.45 × 12,809.43
  4. Step 4: Simplify right side
    21,304.54x = 376,628,657.13
  5. Step 5: Solve for x
    x = 376,628,657.13/21,304.54
  6. Step 6: Final answer
    x = 17,678.33

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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.