Home / 12,455.55-17,188.25-6,790.19

Finding the Fourth Proportional to 12,455.55, 17,188.25 and 6,790.19

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Solution

The fourth proportional to 12,455.55, 17,188.25 and 6,790.19 is: 9,370.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.55 : 17,188.25 = 6,790.19 : x
  2. Step 2: Convert to fraction form
    12,455.55/17,188.25 = 6,790.19/x
  3. Step 3: Cross multiply
    12,455.55x = 17,188.25 × 6,790.19
  4. Step 4: Simplify right side
    12,455.55x = 116,711,363.38
  5. Step 5: Solve for x
    x = 116,711,363.38/12,455.55
  6. Step 6: Final answer
    x = 9,370.23

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Half scale
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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.