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Finding the Fourth Proportional to 13,096.61, 18,073.73 and 7,128.68

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Solution

The fourth proportional to 13,096.61, 18,073.73 and 7,128.68 is: 9,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,096.61 : 18,073.73 = 7,128.68 : x
  2. Step 2: Convert to fraction form
    13,096.61/18,073.73 = 7,128.68/x
  3. Step 3: Cross multiply
    13,096.61x = 18,073.73 × 7,128.68
  4. Step 4: Simplify right side
    13,096.61x = 128,841,900.58
  5. Step 5: Solve for x
    x = 128,841,900.58/13,096.61
  6. Step 6: Final answer
    x = 9,837.80

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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.