Home / 13,677.28-20,509.43-6,279.55

Finding the Fourth Proportional to 13,677.28, 20,509.43 and 6,279.55

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Solution

The fourth proportional to 13,677.28, 20,509.43 and 6,279.55 is: 9,416.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.28 : 20,509.43 = 6,279.55 : x
  2. Step 2: Convert to fraction form
    13,677.28/20,509.43 = 6,279.55/x
  3. Step 3: Cross multiply
    13,677.28x = 20,509.43 × 6,279.55
  4. Step 4: Simplify right side
    13,677.28x = 128,789,908.49
  5. Step 5: Solve for x
    x = 128,789,908.49/13,677.28
  6. Step 6: Final answer
    x = 9,416.34

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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.