Home / 12,721.19-17,549.19-8,474.22

Finding the Fourth Proportional to 12,721.19, 17,549.19 and 8,474.22

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Solution

The fourth proportional to 12,721.19, 17,549.19 and 8,474.22 is: 11,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.19 : 17,549.19 = 8,474.22 : x
  2. Step 2: Convert to fraction form
    12,721.19/17,549.19 = 8,474.22/x
  3. Step 3: Cross multiply
    12,721.19x = 17,549.19 × 8,474.22
  4. Step 4: Simplify right side
    12,721.19x = 148,715,696.88
  5. Step 5: Solve for x
    x = 148,715,696.88/12,721.19
  6. Step 6: Final answer
    x = 11,690.40

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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.