Home / 22,428.99-30,949.67-13,813.79

Finding the Fourth Proportional to 22,428.99, 30,949.67 and 13,813.79

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Solution

The fourth proportional to 22,428.99, 30,949.67 and 13,813.79 is: 19,061.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,428.99 : 30,949.67 = 13,813.79 : x
  2. Step 2: Convert to fraction form
    22,428.99/30,949.67 = 13,813.79/x
  3. Step 3: Cross multiply
    22,428.99x = 30,949.67 × 13,813.79
  4. Step 4: Simplify right side
    22,428.99x = 427,532,018.13
  5. Step 5: Solve for x
    x = 427,532,018.13/22,428.99
  6. Step 6: Final answer
    x = 19,061.58

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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.