Home / 11,255.45-15,528.78-6,777.50

Finding the Fourth Proportional to 11,255.45, 15,528.78 and 6,777.50

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Solution

The fourth proportional to 11,255.45, 15,528.78 and 6,777.50 is: 9,350.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,255.45 : 15,528.78 = 6,777.50 : x
  2. Step 2: Convert to fraction form
    11,255.45/15,528.78 = 6,777.50/x
  3. Step 3: Cross multiply
    11,255.45x = 15,528.78 × 6,777.50
  4. Step 4: Simplify right side
    11,255.45x = 105,246,228.81
  5. Step 5: Solve for x
    x = 105,246,228.81/11,255.45
  6. Step 6: Final answer
    x = 9,350.69

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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.