Home / 20,387.26-30,588.68-7,916.04

Finding the Fourth Proportional to 20,387.26, 30,588.68 and 7,916.04

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Solution

The fourth proportional to 20,387.26, 30,588.68 and 7,916.04 is: 11,877.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.26 : 30,588.68 = 7,916.04 : x
  2. Step 2: Convert to fraction form
    20,387.26/30,588.68 = 7,916.04/x
  3. Step 3: Cross multiply
    20,387.26x = 30,588.68 × 7,916.04
  4. Step 4: Simplify right side
    20,387.26x = 242,141,174.85
  5. Step 5: Solve for x
    x = 242,141,174.85/20,387.26
  6. Step 6: Final answer
    x = 11,877.08

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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.