Home / 13,999.20-19,322.16-9,813.60

Finding the Fourth Proportional to 13,999.20, 19,322.16 and 9,813.60

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Solution

The fourth proportional to 13,999.20, 19,322.16 and 9,813.60 is: 13,545.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.20 : 19,322.16 = 9,813.60 : x
  2. Step 2: Convert to fraction form
    13,999.20/19,322.16 = 9,813.60/x
  3. Step 3: Cross multiply
    13,999.20x = 19,322.16 × 9,813.60
  4. Step 4: Simplify right side
    13,999.20x = 189,619,949.38
  5. Step 5: Solve for x
    x = 189,619,949.38/13,999.20
  6. Step 6: Final answer
    x = 13,545.06

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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.