Home / 21,885.32-30,202.10-11,949.32

Finding the Fourth Proportional to 21,885.32, 30,202.10 and 11,949.32

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Solution

The fourth proportional to 21,885.32, 30,202.10 and 11,949.32 is: 16,490.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.32 : 30,202.10 = 11,949.32 : x
  2. Step 2: Convert to fraction form
    21,885.32/30,202.10 = 11,949.32/x
  3. Step 3: Cross multiply
    21,885.32x = 30,202.10 × 11,949.32
  4. Step 4: Simplify right side
    21,885.32x = 360,894,557.57
  5. Step 5: Solve for x
    x = 360,894,557.57/21,885.32
  6. Step 6: Final answer
    x = 16,490.26

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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.