Home / 11,148.55-15,384.78-6,112.78

Finding the Fourth Proportional to 11,148.55, 15,384.78 and 6,112.78

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Solution

The fourth proportional to 11,148.55, 15,384.78 and 6,112.78 is: 8,435.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.55 : 15,384.78 = 6,112.78 : x
  2. Step 2: Convert to fraction form
    11,148.55/15,384.78 = 6,112.78/x
  3. Step 3: Cross multiply
    11,148.55x = 15,384.78 × 6,112.78
  4. Step 4: Simplify right side
    11,148.55x = 94,043,775.49
  5. Step 5: Solve for x
    x = 94,043,775.49/11,148.55
  6. Step 6: Final answer
    x = 8,435.52

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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.