Home / 13,112.48-19,646.84-9,209.90

Finding the Fourth Proportional to 13,112.48, 19,646.84 and 9,209.90

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Solution

The fourth proportional to 13,112.48, 19,646.84 and 9,209.90 is: 13,799.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.48 : 19,646.84 = 9,209.90 : x
  2. Step 2: Convert to fraction form
    13,112.48/19,646.84 = 9,209.90/x
  3. Step 3: Cross multiply
    13,112.48x = 19,646.84 × 9,209.90
  4. Step 4: Simplify right side
    13,112.48x = 180,945,431.72
  5. Step 5: Solve for x
    x = 180,945,431.72/13,112.48
  6. Step 6: Final answer
    x = 13,799.48

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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.