Home / 13,381.39-20,084.54-6,812.49

Finding the Fourth Proportional to 13,381.39, 20,084.54 and 6,812.49

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Solution

The fourth proportional to 13,381.39, 20,084.54 and 6,812.49 is: 10,225.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.39 : 20,084.54 = 6,812.49 : x
  2. Step 2: Convert to fraction form
    13,381.39/20,084.54 = 6,812.49/x
  3. Step 3: Cross multiply
    13,381.39x = 20,084.54 × 6,812.49
  4. Step 4: Simplify right side
    13,381.39x = 136,825,727.90
  5. Step 5: Solve for x
    x = 136,825,727.90/13,381.39
  6. Step 6: Final answer
    x = 10,225.08

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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.