Home / 20,428.48-30,614.37-9,307.99

Finding the Fourth Proportional to 20,428.48, 30,614.37 and 9,307.99

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Solution

The fourth proportional to 20,428.48, 30,614.37 and 9,307.99 is: 13,949.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.48 : 30,614.37 = 9,307.99 : x
  2. Step 2: Convert to fraction form
    20,428.48/30,614.37 = 9,307.99/x
  3. Step 3: Cross multiply
    20,428.48x = 30,614.37 × 9,307.99
  4. Step 4: Simplify right side
    20,428.48x = 284,958,249.82
  5. Step 5: Solve for x
    x = 284,958,249.82/20,428.48
  6. Step 6: Final answer
    x = 13,949.07

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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.