Home / 20,356.73-28,092.30-12,398.96

Finding the Fourth Proportional to 20,356.73, 28,092.30 and 12,398.96

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Solution

The fourth proportional to 20,356.73, 28,092.30 and 12,398.96 is: 17,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.73 : 28,092.30 = 12,398.96 : x
  2. Step 2: Convert to fraction form
    20,356.73/28,092.30 = 12,398.96/x
  3. Step 3: Cross multiply
    20,356.73x = 28,092.30 × 12,398.96
  4. Step 4: Simplify right side
    20,356.73x = 348,315,327.74
  5. Step 5: Solve for x
    x = 348,315,327.74/20,356.73
  6. Step 6: Final answer
    x = 17,110.57

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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.