Home / 13,221.24-19,831.86-5,436.60

Finding the Fourth Proportional to 13,221.24, 19,831.86 and 5,436.60

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Solution

The fourth proportional to 13,221.24, 19,831.86 and 5,436.60 is: 8,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.24 : 19,831.86 = 5,436.60 : x
  2. Step 2: Convert to fraction form
    13,221.24/19,831.86 = 5,436.60/x
  3. Step 3: Cross multiply
    13,221.24x = 19,831.86 × 5,436.60
  4. Step 4: Simplify right side
    13,221.24x = 107,817,890.08
  5. Step 5: Solve for x
    x = 107,817,890.08/13,221.24
  6. Step 6: Final answer
    x = 8,154.90

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1.5x scale

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.