Home / 10,328.92-14,240.81-8,438.58

Finding the Fourth Proportional to 10,328.92, 14,240.81 and 8,438.58

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Solution

The fourth proportional to 10,328.92, 14,240.81 and 8,438.58 is: 11,634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,328.92 : 14,240.81 = 8,438.58 : x
  2. Step 2: Convert to fraction form
    10,328.92/14,240.81 = 8,438.58/x
  3. Step 3: Cross multiply
    10,328.92x = 14,240.81 × 8,438.58
  4. Step 4: Simplify right side
    10,328.92x = 120,172,235.55
  5. Step 5: Solve for x
    x = 120,172,235.55/10,328.92
  6. Step 6: Final answer
    x = 11,634.54

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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.