Home / 8,880.32-13,227.40-8,431.04

Finding the Fourth Proportional to 8,880.32, 13,227.40 and 8,431.04

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Solution

The fourth proportional to 8,880.32, 13,227.40 and 8,431.04 is: 12,558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.32 : 13,227.40 = 8,431.04 : x
  2. Step 2: Convert to fraction form
    8,880.32/13,227.40 = 8,431.04/x
  3. Step 3: Cross multiply
    8,880.32x = 13,227.40 × 8,431.04
  4. Step 4: Simplify right side
    8,880.32x = 111,520,738.50
  5. Step 5: Solve for x
    x = 111,520,738.50/8,880.32
  6. Step 6: Final answer
    x = 12,558.19

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Half scale
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Double scale
Find fourth proportional to 8,881.32, 13,228.89 and 8,432.04
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.