Home / 11,365.78-15,681.18-6,648.34

Finding the Fourth Proportional to 11,365.78, 15,681.18 and 6,648.34

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Solution

The fourth proportional to 11,365.78, 15,681.18 and 6,648.34 is: 9,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,365.78 : 15,681.18 = 6,648.34 : x
  2. Step 2: Convert to fraction form
    11,365.78/15,681.18 = 6,648.34/x
  3. Step 3: Cross multiply
    11,365.78x = 15,681.18 × 6,648.34
  4. Step 4: Simplify right side
    11,365.78x = 104,253,816.24
  5. Step 5: Solve for x
    x = 104,253,816.24/11,365.78
  6. Step 6: Final answer
    x = 9,172.61

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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.