Home / 13,130.31-19,673.19-7,925.25

Finding the Fourth Proportional to 13,130.31, 19,673.19 and 7,925.25

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Solution

The fourth proportional to 13,130.31, 19,673.19 and 7,925.25 is: 11,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.31 : 19,673.19 = 7,925.25 : x
  2. Step 2: Convert to fraction form
    13,130.31/19,673.19 = 7,925.25/x
  3. Step 3: Cross multiply
    13,130.31x = 19,673.19 × 7,925.25
  4. Step 4: Simplify right side
    13,130.31x = 155,914,949.05
  5. Step 5: Solve for x
    x = 155,914,949.05/13,130.31
  6. Step 6: Final answer
    x = 11,874.43

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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.