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Finding the Fourth Proportional to 13,398.93, 20,100.20 and 5,605.92

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Solution

The fourth proportional to 13,398.93, 20,100.20 and 5,605.92 is: 8,409.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.93 : 20,100.20 = 5,605.92 : x
  2. Step 2: Convert to fraction form
    13,398.93/20,100.20 = 5,605.92/x
  3. Step 3: Cross multiply
    13,398.93x = 20,100.20 × 5,605.92
  4. Step 4: Simplify right side
    13,398.93x = 112,680,085.15
  5. Step 5: Solve for x
    x = 112,680,085.15/13,398.93
  6. Step 6: Final answer
    x = 8,409.63

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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.