Home / 20,211.15-27,895.14-11,718.76

Finding the Fourth Proportional to 20,211.15, 27,895.14 and 11,718.76

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Solution

The fourth proportional to 20,211.15, 27,895.14 and 11,718.76 is: 16,174.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.15 : 27,895.14 = 11,718.76 : x
  2. Step 2: Convert to fraction form
    20,211.15/27,895.14 = 11,718.76/x
  3. Step 3: Cross multiply
    20,211.15x = 27,895.14 × 11,718.76
  4. Step 4: Simplify right side
    20,211.15x = 326,896,450.83
  5. Step 5: Solve for x
    x = 326,896,450.83/20,211.15
  6. Step 6: Final answer
    x = 16,174.06

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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.