Home / 21,897.20-30,215.07-12,335.46

Finding the Fourth Proportional to 21,897.20, 30,215.07 and 12,335.46

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Solution

The fourth proportional to 21,897.20, 30,215.07 and 12,335.46 is: 17,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,897.20 : 30,215.07 = 12,335.46 : x
  2. Step 2: Convert to fraction form
    21,897.20/30,215.07 = 12,335.46/x
  3. Step 3: Cross multiply
    21,897.20x = 30,215.07 × 12,335.46
  4. Step 4: Simplify right side
    21,897.20x = 372,716,787.38
  5. Step 5: Solve for x
    x = 372,716,787.38/21,897.20
  6. Step 6: Final answer
    x = 17,021.21

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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.