Home / 20,927.16-28,877.06-11,974.13

Finding the Fourth Proportional to 20,927.16, 28,877.06 and 11,974.13

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Solution

The fourth proportional to 20,927.16, 28,877.06 and 11,974.13 is: 16,522.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.16 : 28,877.06 = 11,974.13 : x
  2. Step 2: Convert to fraction form
    20,927.16/28,877.06 = 11,974.13/x
  3. Step 3: Cross multiply
    20,927.16x = 28,877.06 × 11,974.13
  4. Step 4: Simplify right side
    20,927.16x = 345,777,596.94
  5. Step 5: Solve for x
    x = 345,777,596.94/20,927.16
  6. Step 6: Final answer
    x = 16,522.91

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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.