Home / 12,638.80-17,436.66-7,332.64

Finding the Fourth Proportional to 12,638.80, 17,436.66 and 7,332.64

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Solution

The fourth proportional to 12,638.80, 17,436.66 and 7,332.64 is: 10,116.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.80 : 17,436.66 = 7,332.64 : x
  2. Step 2: Convert to fraction form
    12,638.80/17,436.66 = 7,332.64/x
  3. Step 3: Cross multiply
    12,638.80x = 17,436.66 × 7,332.64
  4. Step 4: Simplify right side
    12,638.80x = 127,856,750.58
  5. Step 5: Solve for x
    x = 127,856,750.58/12,638.80
  6. Step 6: Final answer
    x = 10,116.21

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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.