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Finding the Fourth Proportional to 12,517, 17,277.31 and 7,215.35

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Solution

The fourth proportional to 12,517, 17,277.31 and 7,215.35 is: 9,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,517 : 17,277.31 = 7,215.35 : x
  2. Step 2: Convert to fraction form
    12,517/17,277.31 = 7,215.35/x
  3. Step 3: Cross multiply
    12,517x = 17,277.31 × 7,215.35
  4. Step 4: Simplify right side
    12,517x = 124,661,838.71
  5. Step 5: Solve for x
    x = 124,661,838.71/12,517
  6. Step 6: Final answer
    x = 9,959.40

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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.