Home / 21,892.11-30,211.16-12,460.74

Finding the Fourth Proportional to 21,892.11, 30,211.16 and 12,460.74

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Solution

The fourth proportional to 21,892.11, 30,211.16 and 12,460.74 is: 17,195.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,892.11 : 30,211.16 = 12,460.74 : x
  2. Step 2: Convert to fraction form
    21,892.11/30,211.16 = 12,460.74/x
  3. Step 3: Cross multiply
    21,892.11x = 30,211.16 × 12,460.74
  4. Step 4: Simplify right side
    21,892.11x = 376,453,347.55
  5. Step 5: Solve for x
    x = 376,453,347.55/21,892.11
  6. Step 6: Final answer
    x = 17,195.85

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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.