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Finding the Fourth Proportional to 12,696.95, 17,521.65 and 7,031.95

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Solution

The fourth proportional to 12,696.95, 17,521.65 and 7,031.95 is: 9,704.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.95 : 17,521.65 = 7,031.95 : x
  2. Step 2: Convert to fraction form
    12,696.95/17,521.65 = 7,031.95/x
  3. Step 3: Cross multiply
    12,696.95x = 17,521.65 × 7,031.95
  4. Step 4: Simplify right side
    12,696.95x = 123,211,322.91
  5. Step 5: Solve for x
    x = 123,211,322.91/12,696.95
  6. Step 6: Final answer
    x = 9,704.01

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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.