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Finding the Fourth Proportional to 12,699.36, 17,525.76 and 7,034.40

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Solution

The fourth proportional to 12,699.36, 17,525.76 and 7,034.40 is: 9,707.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.36 : 17,525.76 = 7,034.40 : x
  2. Step 2: Convert to fraction form
    12,699.36/17,525.76 = 7,034.40/x
  3. Step 3: Cross multiply
    12,699.36x = 17,525.76 × 7,034.40
  4. Step 4: Simplify right side
    12,699.36x = 123,283,206.14
  5. Step 5: Solve for x
    x = 123,283,206.14/12,699.36
  6. Step 6: Final answer
    x = 9,707.83

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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.