Home / 13,144.48-19,720.48-4,385.12

Finding the Fourth Proportional to 13,144.48, 19,720.48 and 4,385.12

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Solution

The fourth proportional to 13,144.48, 19,720.48 and 4,385.12 is: 6,578.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.48 : 19,720.48 = 4,385.12 : x
  2. Step 2: Convert to fraction form
    13,144.48/19,720.48 = 4,385.12/x
  3. Step 3: Cross multiply
    13,144.48x = 19,720.48 × 4,385.12
  4. Step 4: Simplify right side
    13,144.48x = 86,476,671.26
  5. Step 5: Solve for x
    x = 86,476,671.26/13,144.48
  6. Step 6: Final answer
    x = 6,578.93

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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.