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Finding the Fourth Proportional to 12,888.03, 17,785.52 and 7,299.03

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Solution

The fourth proportional to 12,888.03, 17,785.52 and 7,299.03 is: 10,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.03 : 17,785.52 = 7,299.03 : x
  2. Step 2: Convert to fraction form
    12,888.03/17,785.52 = 7,299.03/x
  3. Step 3: Cross multiply
    12,888.03x = 17,785.52 × 7,299.03
  4. Step 4: Simplify right side
    12,888.03x = 129,817,007.55
  5. Step 5: Solve for x
    x = 129,817,007.55/12,888.03
  6. Step 6: Final answer
    x = 10,072.68

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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.