Home / 20,440.34-28,197.07-13,727.87

Finding the Fourth Proportional to 20,440.34, 28,197.07 and 13,727.87

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Solution

The fourth proportional to 20,440.34, 28,197.07 and 13,727.87 is: 18,937.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.34 : 28,197.07 = 13,727.87 : x
  2. Step 2: Convert to fraction form
    20,440.34/28,197.07 = 13,727.87/x
  3. Step 3: Cross multiply
    20,440.34x = 28,197.07 × 13,727.87
  4. Step 4: Simplify right side
    20,440.34x = 387,085,711.34
  5. Step 5: Solve for x
    x = 387,085,711.34/20,440.34
  6. Step 6: Final answer
    x = 18,937.34

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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.