Home / 10,618.34-15,930.75-5,427.86

Finding the Fourth Proportional to 10,618.34, 15,930.75 and 5,427.86

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Solution

The fourth proportional to 10,618.34, 15,930.75 and 5,427.86 is: 8,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,618.34 : 15,930.75 = 5,427.86 : x
  2. Step 2: Convert to fraction form
    10,618.34/15,930.75 = 5,427.86/x
  3. Step 3: Cross multiply
    10,618.34x = 15,930.75 × 5,427.86
  4. Step 4: Simplify right side
    10,618.34x = 86,469,880.70
  5. Step 5: Solve for x
    x = 86,469,880.70/10,618.34
  6. Step 6: Final answer
    x = 8,143.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.