Home / 13,218.91-19,831.30-4,453.59

Finding the Fourth Proportional to 13,218.91, 19,831.30 and 4,453.59

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Solution

The fourth proportional to 13,218.91, 19,831.30 and 4,453.59 is: 6,681.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.91 : 19,831.30 = 4,453.59 : x
  2. Step 2: Convert to fraction form
    13,218.91/19,831.30 = 4,453.59/x
  3. Step 3: Cross multiply
    13,218.91x = 19,831.30 × 4,453.59
  4. Step 4: Simplify right side
    13,218.91x = 88,320,542.60
  5. Step 5: Solve for x
    x = 88,320,542.60/13,218.91
  6. Step 6: Final answer
    x = 6,681.38

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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.