Home / 11,423.85-15,766.35-6,388.35

Finding the Fourth Proportional to 11,423.85, 15,766.35 and 6,388.35

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Solution

The fourth proportional to 11,423.85, 15,766.35 and 6,388.35 is: 8,816.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,423.85 : 15,766.35 = 6,388.35 : x
  2. Step 2: Convert to fraction form
    11,423.85/15,766.35 = 6,388.35/x
  3. Step 3: Cross multiply
    11,423.85x = 15,766.35 × 6,388.35
  4. Step 4: Simplify right side
    11,423.85x = 100,720,962.02
  5. Step 5: Solve for x
    x = 100,720,962.02/11,423.85
  6. Step 6: Final answer
    x = 8,816.73

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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.