Home / 13,189.98-19,781.10-5,292.48

Finding the Fourth Proportional to 13,189.98, 19,781.10 and 5,292.48

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Solution

The fourth proportional to 13,189.98, 19,781.10 and 5,292.48 is: 7,937.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.98 : 19,781.10 = 5,292.48 : x
  2. Step 2: Convert to fraction form
    13,189.98/19,781.10 = 5,292.48/x
  3. Step 3: Cross multiply
    13,189.98x = 19,781.10 × 5,292.48
  4. Step 4: Simplify right side
    13,189.98x = 104,691,076.13
  5. Step 5: Solve for x
    x = 104,691,076.13/13,189.98
  6. Step 6: Final answer
    x = 7,937.17

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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.