Home / 12,683.18-17,507.44-7,647.58

Finding the Fourth Proportional to 12,683.18, 17,507.44 and 7,647.58

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Solution

The fourth proportional to 12,683.18, 17,507.44 and 7,647.58 is: 10,556.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,683.18 : 17,507.44 = 7,647.58 : x
  2. Step 2: Convert to fraction form
    12,683.18/17,507.44 = 7,647.58/x
  3. Step 3: Cross multiply
    12,683.18x = 17,507.44 × 7,647.58
  4. Step 4: Simplify right side
    12,683.18x = 133,889,548.00
  5. Step 5: Solve for x
    x = 133,889,548.00/12,683.18
  6. Step 6: Final answer
    x = 10,556.47

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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.