Home / 12,160.56-16,777.73-7,121.35

Finding the Fourth Proportional to 12,160.56, 16,777.73 and 7,121.35

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Solution

The fourth proportional to 12,160.56, 16,777.73 and 7,121.35 is: 9,825.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.56 : 16,777.73 = 7,121.35 : x
  2. Step 2: Convert to fraction form
    12,160.56/16,777.73 = 7,121.35/x
  3. Step 3: Cross multiply
    12,160.56x = 16,777.73 × 7,121.35
  4. Step 4: Simplify right side
    12,160.56x = 119,480,126.31
  5. Step 5: Solve for x
    x = 119,480,126.31/12,160.56
  6. Step 6: Final answer
    x = 9,825.21

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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.