Home / 11,390.50-15,720.11-6,356.48

Finding the Fourth Proportional to 11,390.50, 15,720.11 and 6,356.48

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Solution

The fourth proportional to 11,390.50, 15,720.11 and 6,356.48 is: 8,772.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.50 : 15,720.11 = 6,356.48 : x
  2. Step 2: Convert to fraction form
    11,390.50/15,720.11 = 6,356.48/x
  3. Step 3: Cross multiply
    11,390.50x = 15,720.11 × 6,356.48
  4. Step 4: Simplify right side
    11,390.50x = 99,924,478.27
  5. Step 5: Solve for x
    x = 99,924,478.27/11,390.50
  6. Step 6: Final answer
    x = 8,772.61

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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.