Home / 11,770.56-16,228.62-8,621.28

Finding the Fourth Proportional to 11,770.56, 16,228.62 and 8,621.28

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Solution

The fourth proportional to 11,770.56, 16,228.62 and 8,621.28 is: 11,886.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,770.56 : 16,228.62 = 8,621.28 : x
  2. Step 2: Convert to fraction form
    11,770.56/16,228.62 = 8,621.28/x
  3. Step 3: Cross multiply
    11,770.56x = 16,228.62 × 8,621.28
  4. Step 4: Simplify right side
    11,770.56x = 139,911,477.03
  5. Step 5: Solve for x
    x = 139,911,477.03/11,770.56
  6. Step 6: Final answer
    x = 11,886.56

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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.