Home / 12,455.50-17,188.59-6,866.62

Finding the Fourth Proportional to 12,455.50, 17,188.59 and 6,866.62

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Solution

The fourth proportional to 12,455.50, 17,188.59 and 6,866.62 is: 9,475.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.50 : 17,188.59 = 6,866.62 : x
  2. Step 2: Convert to fraction form
    12,455.50/17,188.59 = 6,866.62/x
  3. Step 3: Cross multiply
    12,455.50x = 17,188.59 × 6,866.62
  4. Step 4: Simplify right side
    12,455.50x = 118,027,515.87
  5. Step 5: Solve for x
    x = 118,027,515.87/12,455.50
  6. Step 6: Final answer
    x = 9,475.94

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Double 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.