Home / 40,831.75-61,247.63-13,129.75

Finding the Fourth Proportional to 40,831.75, 61,247.63 and 13,129.75

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Solution

The fourth proportional to 40,831.75, 61,247.63 and 13,129.75 is: 19,694.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,831.75 : 61,247.63 = 13,129.75 : x
  2. Step 2: Convert to fraction form
    40,831.75/61,247.63 = 13,129.75/x
  3. Step 3: Cross multiply
    40,831.75x = 61,247.63 × 13,129.75
  4. Step 4: Simplify right side
    40,831.75x = 804,166,069.99
  5. Step 5: Solve for x
    x = 804,166,069.99/40,831.75
  6. Step 6: Final answer
    x = 19,694.63

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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.