Home / 13,883.19-19,138.86-9,897.38

Finding the Fourth Proportional to 13,883.19, 19,138.86 and 9,897.38

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Solution

The fourth proportional to 13,883.19, 19,138.86 and 9,897.38 is: 13,644.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,883.19 : 19,138.86 = 9,897.38 : x
  2. Step 2: Convert to fraction form
    13,883.19/19,138.86 = 9,897.38/x
  3. Step 3: Cross multiply
    13,883.19x = 19,138.86 × 9,897.38
  4. Step 4: Simplify right side
    13,883.19x = 189,424,546.26
  5. Step 5: Solve for x
    x = 189,424,546.26/13,883.19
  6. Step 6: Final answer
    x = 13,644.17

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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.