Home / 11,161.62-15,403.14-6,445.80

Finding the Fourth Proportional to 11,161.62, 15,403.14 and 6,445.80

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Solution

The fourth proportional to 11,161.62, 15,403.14 and 6,445.80 is: 8,895.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.62 : 15,403.14 = 6,445.80 : x
  2. Step 2: Convert to fraction form
    11,161.62/15,403.14 = 6,445.80/x
  3. Step 3: Cross multiply
    11,161.62x = 15,403.14 × 6,445.80
  4. Step 4: Simplify right side
    11,161.62x = 99,285,559.81
  5. Step 5: Solve for x
    x = 99,285,559.81/11,161.62
  6. Step 6: Final answer
    x = 8,895.26

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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.