Home / 12,795.60-19,193.40-8,640.30

Finding the Fourth Proportional to 12,795.60, 19,193.40 and 8,640.30

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Solution

The fourth proportional to 12,795.60, 19,193.40 and 8,640.30 is: 12,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.60 : 19,193.40 = 8,640.30 : x
  2. Step 2: Convert to fraction form
    12,795.60/19,193.40 = 8,640.30/x
  3. Step 3: Cross multiply
    12,795.60x = 19,193.40 × 8,640.30
  4. Step 4: Simplify right side
    12,795.60x = 165,836,734.02
  5. Step 5: Solve for x
    x = 165,836,734.02/12,795.60
  6. Step 6: Final answer
    x = 12,960.45

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Similar ratio
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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.