Home / 21,943.71-30,281.45-12,512.27

Finding the Fourth Proportional to 21,943.71, 30,281.45 and 12,512.27

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Solution

The fourth proportional to 21,943.71, 30,281.45 and 12,512.27 is: 17,266.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.71 : 30,281.45 = 12,512.27 : x
  2. Step 2: Convert to fraction form
    21,943.71/30,281.45 = 12,512.27/x
  3. Step 3: Cross multiply
    21,943.71x = 30,281.45 × 12,512.27
  4. Step 4: Simplify right side
    21,943.71x = 378,889,691.53
  5. Step 5: Solve for x
    x = 378,889,691.53/21,943.71
  6. Step 6: Final answer
    x = 17,266.44

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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.