Home / 13,755.29-20,621.25-7,084.22

Finding the Fourth Proportional to 13,755.29, 20,621.25 and 7,084.22

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Solution

The fourth proportional to 13,755.29, 20,621.25 and 7,084.22 is: 10,620.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.29 : 20,621.25 = 7,084.22 : x
  2. Step 2: Convert to fraction form
    13,755.29/20,621.25 = 7,084.22/x
  3. Step 3: Cross multiply
    13,755.29x = 20,621.25 × 7,084.22
  4. Step 4: Simplify right side
    13,755.29x = 146,085,368.57
  5. Step 5: Solve for x
    x = 146,085,368.57/13,755.29
  6. Step 6: Final answer
    x = 10,620.31

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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.