Home / 20,350.16-28,083.94-11,398.48

Finding the Fourth Proportional to 20,350.16, 28,083.94 and 11,398.48

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Solution

The fourth proportional to 20,350.16, 28,083.94 and 11,398.48 is: 15,730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.16 : 28,083.94 = 11,398.48 : x
  2. Step 2: Convert to fraction form
    20,350.16/28,083.94 = 11,398.48/x
  3. Step 3: Cross multiply
    20,350.16x = 28,083.94 × 11,398.48
  4. Step 4: Simplify right side
    20,350.16x = 320,114,228.41
  5. Step 5: Solve for x
    x = 320,114,228.41/20,350.16
  6. Step 6: Final answer
    x = 15,730.31

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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.