Home / 21,943.14-30,281.76-12,512.31

Finding the Fourth Proportional to 21,943.14, 30,281.76 and 12,512.31

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Solution

The fourth proportional to 21,943.14, 30,281.76 and 12,512.31 is: 17,267.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.14 : 30,281.76 = 12,512.31 : x
  2. Step 2: Convert to fraction form
    21,943.14/30,281.76 = 12,512.31/x
  3. Step 3: Cross multiply
    21,943.14x = 30,281.76 × 12,512.31
  4. Step 4: Simplify right side
    21,943.14x = 378,894,768.47
  5. Step 5: Solve for x
    x = 378,894,768.47/21,943.14
  6. Step 6: Final answer
    x = 17,267.12

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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.