Home / 14,428.68-19,912.14-8,141.28

Finding the Fourth Proportional to 14,428.68, 19,912.14 and 8,141.28

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Solution

The fourth proportional to 14,428.68, 19,912.14 and 8,141.28 is: 11,235.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.68 : 19,912.14 = 8,141.28 : x
  2. Step 2: Convert to fraction form
    14,428.68/19,912.14 = 8,141.28/x
  3. Step 3: Cross multiply
    14,428.68x = 19,912.14 × 8,141.28
  4. Step 4: Simplify right side
    14,428.68x = 162,110,307.14
  5. Step 5: Solve for x
    x = 162,110,307.14/14,428.68
  6. Step 6: Final answer
    x = 11,235.28

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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.