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Finding the Fourth Proportional to 12,345.40, 17,033.94 and 7,307.12

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Solution

The fourth proportional to 12,345.40, 17,033.94 and 7,307.12 is: 10,082.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.40 : 17,033.94 = 7,307.12 : x
  2. Step 2: Convert to fraction form
    12,345.40/17,033.94 = 7,307.12/x
  3. Step 3: Cross multiply
    12,345.40x = 17,033.94 × 7,307.12
  4. Step 4: Simplify right side
    12,345.40x = 124,469,043.65
  5. Step 5: Solve for x
    x = 124,469,043.65/12,345.40
  6. Step 6: Final answer
    x = 10,082.22

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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.