Home / 13,084.18-18,056.06-7,115.80

Finding the Fourth Proportional to 13,084.18, 18,056.06 and 7,115.80

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Solution

The fourth proportional to 13,084.18, 18,056.06 and 7,115.80 is: 9,819.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,084.18 : 18,056.06 = 7,115.80 : x
  2. Step 2: Convert to fraction form
    13,084.18/18,056.06 = 7,115.80/x
  3. Step 3: Cross multiply
    13,084.18x = 18,056.06 × 7,115.80
  4. Step 4: Simplify right side
    13,084.18x = 128,483,311.75
  5. Step 5: Solve for x
    x = 128,483,311.75/13,084.18
  6. Step 6: Final answer
    x = 9,819.75

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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.