Home / 15,902.02-21,917.23-11,916.21

Finding the Fourth Proportional to 15,902.02, 21,917.23 and 11,916.21

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Solution

The fourth proportional to 15,902.02, 21,917.23 and 11,916.21 is: 16,423.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,902.02 : 21,917.23 = 11,916.21 : x
  2. Step 2: Convert to fraction form
    15,902.02/21,917.23 = 11,916.21/x
  3. Step 3: Cross multiply
    15,902.02x = 21,917.23 × 11,916.21
  4. Step 4: Simplify right side
    15,902.02x = 261,170,434.73
  5. Step 5: Solve for x
    x = 261,170,434.73/15,902.02
  6. Step 6: Final answer
    x = 16,423.73

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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.