Home / 13,218.48-19,725.60-11,745.90

Finding the Fourth Proportional to 13,218.48, 19,725.60 and 11,745.90

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Solution

The fourth proportional to 13,218.48, 19,725.60 and 11,745.90 is: 17,528.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.48 : 19,725.60 = 11,745.90 : x
  2. Step 2: Convert to fraction form
    13,218.48/19,725.60 = 11,745.90/x
  3. Step 3: Cross multiply
    13,218.48x = 19,725.60 × 11,745.90
  4. Step 4: Simplify right side
    13,218.48x = 231,694,925.04
  5. Step 5: Solve for x
    x = 231,694,925.04/13,218.48
  6. Step 6: Final answer
    x = 17,528.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.