Home / 10,511.74-15,764.10-8,174.35

Finding the Fourth Proportional to 10,511.74, 15,764.10 and 8,174.35

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Solution

The fourth proportional to 10,511.74, 15,764.10 and 8,174.35 is: 12,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.74 : 15,764.10 = 8,174.35 : x
  2. Step 2: Convert to fraction form
    10,511.74/15,764.10 = 8,174.35/x
  3. Step 3: Cross multiply
    10,511.74x = 15,764.10 × 8,174.35
  4. Step 4: Simplify right side
    10,511.74x = 128,861,270.84
  5. Step 5: Solve for x
    x = 128,861,270.84/10,511.74
  6. Step 6: Final answer
    x = 12,258.80

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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.