Home / 20,960.48-31,461.38-15,398.21

Finding the Fourth Proportional to 20,960.48, 31,461.38 and 15,398.21

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Solution

The fourth proportional to 20,960.48, 31,461.38 and 15,398.21 is: 23,112.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.48 : 31,461.38 = 15,398.21 : x
  2. Step 2: Convert to fraction form
    20,960.48/31,461.38 = 15,398.21/x
  3. Step 3: Cross multiply
    20,960.48x = 31,461.38 × 15,398.21
  4. Step 4: Simplify right side
    20,960.48x = 484,449,053.28
  5. Step 5: Solve for x
    x = 484,449,053.28/20,960.48
  6. Step 6: Final answer
    x = 23,112.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.