Home / 11,921.79-17,872.06-4,521.23

Finding the Fourth Proportional to 11,921.79, 17,872.06 and 4,521.23

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Solution

The fourth proportional to 11,921.79, 17,872.06 and 4,521.23 is: 6,777.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.79 : 17,872.06 = 4,521.23 : x
  2. Step 2: Convert to fraction form
    11,921.79/17,872.06 = 4,521.23/x
  3. Step 3: Cross multiply
    11,921.79x = 17,872.06 × 4,521.23
  4. Step 4: Simplify right side
    11,921.79x = 80,803,693.83
  5. Step 5: Solve for x
    x = 80,803,693.83/11,921.79
  6. Step 6: Final answer
    x = 6,777.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.