Home / 10,121.31-15,186.29-4,925.79

Finding the Fourth Proportional to 10,121.31, 15,186.29 and 4,925.79

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Solution

The fourth proportional to 10,121.31, 15,186.29 and 4,925.79 is: 7,390.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.31 : 15,186.29 = 4,925.79 : x
  2. Step 2: Convert to fraction form
    10,121.31/15,186.29 = 4,925.79/x
  3. Step 3: Cross multiply
    10,121.31x = 15,186.29 × 4,925.79
  4. Step 4: Simplify right side
    10,121.31x = 74,804,450.79
  5. Step 5: Solve for x
    x = 74,804,450.79/10,121.31
  6. Step 6: Final answer
    x = 7,390.79

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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.