Home / 21,772.26-30,042.63-12,339

Finding the Fourth Proportional to 21,772.26, 30,042.63 and 12,339

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Solution

The fourth proportional to 21,772.26, 30,042.63 and 12,339 is: 17,026.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,772.26 : 30,042.63 = 12,339 : x
  2. Step 2: Convert to fraction form
    21,772.26/30,042.63 = 12,339/x
  3. Step 3: Cross multiply
    21,772.26x = 30,042.63 × 12,339
  4. Step 4: Simplify right side
    21,772.26x = 370,696,011.57
  5. Step 5: Solve for x
    x = 370,696,011.57/21,772.26
  6. Step 6: Final answer
    x = 17,026.07

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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.