Home / 21,919.14-30,244.57-12,963.38

Finding the Fourth Proportional to 21,919.14, 30,244.57 and 12,963.38

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Solution

The fourth proportional to 21,919.14, 30,244.57 and 12,963.38 is: 17,887.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.14 : 30,244.57 = 12,963.38 : x
  2. Step 2: Convert to fraction form
    21,919.14/30,244.57 = 12,963.38/x
  3. Step 3: Cross multiply
    21,919.14x = 30,244.57 × 12,963.38
  4. Step 4: Simplify right side
    21,919.14x = 392,071,670.22
  5. Step 5: Solve for x
    x = 392,071,670.22/21,919.14
  6. Step 6: Final answer
    x = 17,887.18

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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.