Home / 10,189.31-15,261.38-7,831.95

Finding the Fourth Proportional to 10,189.31, 15,261.38 and 7,831.95

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Solution

The fourth proportional to 10,189.31, 15,261.38 and 7,831.95 is: 11,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,189.31 : 15,261.38 = 7,831.95 : x
  2. Step 2: Convert to fraction form
    10,189.31/15,261.38 = 7,831.95/x
  3. Step 3: Cross multiply
    10,189.31x = 15,261.38 × 7,831.95
  4. Step 4: Simplify right side
    10,189.31x = 119,526,325.93
  5. Step 5: Solve for x
    x = 119,526,325.93/10,189.31
  6. Step 6: Final answer
    x = 11,730.57

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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.