Home / 21,897.20-30,218.17-12,465.75

Finding the Fourth Proportional to 21,897.20, 30,218.17 and 12,465.75

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Solution

The fourth proportional to 21,897.20, 30,218.17 and 12,465.75 is: 17,202.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,897.20 : 30,218.17 = 12,465.75 : x
  2. Step 2: Convert to fraction form
    21,897.20/30,218.17 = 12,465.75/x
  3. Step 3: Cross multiply
    21,897.20x = 30,218.17 × 12,465.75
  4. Step 4: Simplify right side
    21,897.20x = 376,692,090.35
  5. Step 5: Solve for x
    x = 376,692,090.35/21,897.20
  6. Step 6: Final answer
    x = 17,202.75

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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.