Home / 12,505.50-17,257.58-6,840.14

Finding the Fourth Proportional to 12,505.50, 17,257.58 and 6,840.14

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Solution

The fourth proportional to 12,505.50, 17,257.58 and 6,840.14 is: 9,439.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.50 : 17,257.58 = 6,840.14 : x
  2. Step 2: Convert to fraction form
    12,505.50/17,257.58 = 6,840.14/x
  3. Step 3: Cross multiply
    12,505.50x = 17,257.58 × 6,840.14
  4. Step 4: Simplify right side
    12,505.50x = 118,044,263.26
  5. Step 5: Solve for x
    x = 118,044,263.26/12,505.50
  6. Step 6: Final answer
    x = 9,439.39

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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.