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Finding the Fourth Proportional to 13,392.76, 20,081.78 and 10,637.08

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Solution

The fourth proportional to 13,392.76, 20,081.78 and 10,637.08 is: 15,949.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392.76 : 20,081.78 = 10,637.08 : x
  2. Step 2: Convert to fraction form
    13,392.76/20,081.78 = 10,637.08/x
  3. Step 3: Cross multiply
    13,392.76x = 20,081.78 × 10,637.08
  4. Step 4: Simplify right side
    13,392.76x = 213,611,500.40
  5. Step 5: Solve for x
    x = 213,611,500.40/13,392.76
  6. Step 6: Final answer
    x = 15,949.77

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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.