Home / 13,434.51-20,146.50-7,889.25

Finding the Fourth Proportional to 13,434.51, 20,146.50 and 7,889.25

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Solution

The fourth proportional to 13,434.51, 20,146.50 and 7,889.25 is: 11,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.51 : 20,146.50 = 7,889.25 : x
  2. Step 2: Convert to fraction form
    13,434.51/20,146.50 = 7,889.25/x
  3. Step 3: Cross multiply
    13,434.51x = 20,146.50 × 7,889.25
  4. Step 4: Simplify right side
    13,434.51x = 158,940,775.13
  5. Step 5: Solve for x
    x = 158,940,775.13/13,434.51
  6. Step 6: Final answer
    x = 11,830.78

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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.