Home / 11,148.18-15,384.60-8,761.20

Finding the Fourth Proportional to 11,148.18, 15,384.60 and 8,761.20

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Solution

The fourth proportional to 11,148.18, 15,384.60 and 8,761.20 is: 12,090.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.18 : 15,384.60 = 8,761.20 : x
  2. Step 2: Convert to fraction form
    11,148.18/15,384.60 = 8,761.20/x
  3. Step 3: Cross multiply
    11,148.18x = 15,384.60 × 8,761.20
  4. Step 4: Simplify right side
    11,148.18x = 134,787,557.52
  5. Step 5: Solve for x
    x = 134,787,557.52/11,148.18
  6. Step 6: Final answer
    x = 12,090.54

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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.