Home / 21,954.47-30,294.62-12,393.86

Finding the Fourth Proportional to 21,954.47, 30,294.62 and 12,393.86

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Solution

The fourth proportional to 21,954.47, 30,294.62 and 12,393.86 is: 17,102.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.47 : 30,294.62 = 12,393.86 : x
  2. Step 2: Convert to fraction form
    21,954.47/30,294.62 = 12,393.86/x
  3. Step 3: Cross multiply
    21,954.47x = 30,294.62 × 12,393.86
  4. Step 4: Simplify right side
    21,954.47x = 375,467,065.59
  5. Step 5: Solve for x
    x = 375,467,065.59/21,954.47
  6. Step 6: Final answer
    x = 17,102.08

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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.