Home / 13,943.52-20,831.04-8,972.64

Finding the Fourth Proportional to 13,943.52, 20,831.04 and 8,972.64

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Solution

The fourth proportional to 13,943.52, 20,831.04 and 8,972.64 is: 13,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.52 : 20,831.04 = 8,972.64 : x
  2. Step 2: Convert to fraction form
    13,943.52/20,831.04 = 8,972.64/x
  3. Step 3: Cross multiply
    13,943.52x = 20,831.04 × 8,972.64
  4. Step 4: Simplify right side
    13,943.52x = 186,909,422.75
  5. Step 5: Solve for x
    x = 186,909,422.75/13,943.52
  6. Step 6: Final answer
    x = 13,404.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.