Home / 21,997.32-30,351.06-12,437.40

Finding the Fourth Proportional to 21,997.32, 30,351.06 and 12,437.40

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Solution

The fourth proportional to 21,997.32, 30,351.06 and 12,437.40 is: 17,160.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,997.32 : 30,351.06 = 12,437.40 : x
  2. Step 2: Convert to fraction form
    21,997.32/30,351.06 = 12,437.40/x
  3. Step 3: Cross multiply
    21,997.32x = 30,351.06 × 12,437.40
  4. Step 4: Simplify right side
    21,997.32x = 377,488,273.64
  5. Step 5: Solve for x
    x = 377,488,273.64/21,997.32
  6. Step 6: Final answer
    x = 17,160.65

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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.