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Finding the Fourth Proportional to 13,096.88, 18,074.08 and 7,128.93

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Solution

The fourth proportional to 13,096.88, 18,074.08 and 7,128.93 is: 9,838.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,096.88 : 18,074.08 = 7,128.93 : x
  2. Step 2: Convert to fraction form
    13,096.88/18,074.08 = 7,128.93/x
  3. Step 3: Cross multiply
    13,096.88x = 18,074.08 × 7,128.93
  4. Step 4: Simplify right side
    13,096.88x = 128,848,851.13
  5. Step 5: Solve for x
    x = 128,848,851.13/13,096.88
  6. Step 6: Final answer
    x = 9,838.13

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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.