Home / 21,772.45-30,048.33-12,340

Finding the Fourth Proportional to 21,772.45, 30,048.33 and 12,340

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Solution

The fourth proportional to 21,772.45, 30,048.33 and 12,340 is: 17,030.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,772.45 : 30,048.33 = 12,340 : x
  2. Step 2: Convert to fraction form
    21,772.45/30,048.33 = 12,340/x
  3. Step 3: Cross multiply
    21,772.45x = 30,048.33 × 12,340
  4. Step 4: Simplify right side
    21,772.45x = 370,796,392.20
  5. Step 5: Solve for x
    x = 370,796,392.20/21,772.45
  6. Step 6: Final answer
    x = 17,030.53

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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.