Home / 13,869.86-20,812.97-5,110.92

Finding the Fourth Proportional to 13,869.86, 20,812.97 and 5,110.92

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Solution

The fourth proportional to 13,869.86, 20,812.97 and 5,110.92 is: 7,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.86 : 20,812.97 = 5,110.92 : x
  2. Step 2: Convert to fraction form
    13,869.86/20,812.97 = 5,110.92/x
  3. Step 3: Cross multiply
    13,869.86x = 20,812.97 × 5,110.92
  4. Step 4: Simplify right side
    13,869.86x = 106,373,437.41
  5. Step 5: Solve for x
    x = 106,373,437.41/13,869.86
  6. Step 6: Final answer
    x = 7,669.40

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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.