Home / 10,515.76-14,530.19-8,408.68

Finding the Fourth Proportional to 10,515.76, 14,530.19 and 8,408.68

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Solution

The fourth proportional to 10,515.76, 14,530.19 and 8,408.68 is: 11,618.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.76 : 14,530.19 = 8,408.68 : x
  2. Step 2: Convert to fraction form
    10,515.76/14,530.19 = 8,408.68/x
  3. Step 3: Cross multiply
    10,515.76x = 14,530.19 × 8,408.68
  4. Step 4: Simplify right side
    10,515.76x = 122,179,639.68
  5. Step 5: Solve for x
    x = 122,179,639.68/10,515.76
  6. Step 6: Final answer
    x = 11,618.72

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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.