Home / 12,777.16-17,633.40-7,112.35

Finding the Fourth Proportional to 12,777.16, 17,633.40 and 7,112.35

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Solution

The fourth proportional to 12,777.16, 17,633.40 and 7,112.35 is: 9,815.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.16 : 17,633.40 = 7,112.35 : x
  2. Step 2: Convert to fraction form
    12,777.16/17,633.40 = 7,112.35/x
  3. Step 3: Cross multiply
    12,777.16x = 17,633.40 × 7,112.35
  4. Step 4: Simplify right side
    12,777.16x = 125,414,912.49
  5. Step 5: Solve for x
    x = 125,414,912.49/12,777.16
  6. Step 6: Final answer
    x = 9,815.55

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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.