Home / 9,419.91-12,999.63-5,171.37

Finding the Fourth Proportional to 9,419.91, 12,999.63 and 5,171.37

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Solution

The fourth proportional to 9,419.91, 12,999.63 and 5,171.37 is: 7,136.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,419.91 : 12,999.63 = 5,171.37 : x
  2. Step 2: Convert to fraction form
    9,419.91/12,999.63 = 5,171.37/x
  3. Step 3: Cross multiply
    9,419.91x = 12,999.63 × 5,171.37
  4. Step 4: Simplify right side
    9,419.91x = 67,225,831.59
  5. Step 5: Solve for x
    x = 67,225,831.59/9,419.91
  6. Step 6: Final answer
    x = 7,136.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.