Home / 12,505.57-17,257.71-6,840.35

Finding the Fourth Proportional to 12,505.57, 17,257.71 and 6,840.35

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Solution

The fourth proportional to 12,505.57, 17,257.71 and 6,840.35 is: 9,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.57 : 17,257.71 = 6,840.35 : x
  2. Step 2: Convert to fraction form
    12,505.57/17,257.71 = 6,840.35/x
  3. Step 3: Cross multiply
    12,505.57x = 17,257.71 × 6,840.35
  4. Step 4: Simplify right side
    12,505.57x = 118,048,776.60
  5. Step 5: Solve for x
    x = 118,048,776.60/12,505.57
  6. Step 6: Final answer
    x = 9,439.70

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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.