Home / 11,968.47-16,516.76-6,663.78

Finding the Fourth Proportional to 11,968.47, 16,516.76 and 6,663.78

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Solution

The fourth proportional to 11,968.47, 16,516.76 and 6,663.78 is: 9,196.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,968.47 : 16,516.76 = 6,663.78 : x
  2. Step 2: Convert to fraction form
    11,968.47/16,516.76 = 6,663.78/x
  3. Step 3: Cross multiply
    11,968.47x = 16,516.76 × 6,663.78
  4. Step 4: Simplify right side
    11,968.47x = 110,064,021.63
  5. Step 5: Solve for x
    x = 110,064,021.63/11,968.47
  6. Step 6: Final answer
    x = 9,196.16

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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.