Home / 20,178.48-30,248.28-10,811.64

Finding the Fourth Proportional to 20,178.48, 30,248.28 and 10,811.64

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Solution

The fourth proportional to 20,178.48, 30,248.28 and 10,811.64 is: 16,207.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.48 : 30,248.28 = 10,811.64 : x
  2. Step 2: Convert to fraction form
    20,178.48/30,248.28 = 10,811.64/x
  3. Step 3: Cross multiply
    20,178.48x = 30,248.28 × 10,811.64
  4. Step 4: Simplify right side
    20,178.48x = 327,033,513.98
  5. Step 5: Solve for x
    x = 327,033,513.98/20,178.48
  6. Step 6: Final answer
    x = 16,207.04

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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.