Home / 19,141.49-28,715.68-7,890.57

Finding the Fourth Proportional to 19,141.49, 28,715.68 and 7,890.57

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Solution

The fourth proportional to 19,141.49, 28,715.68 and 7,890.57 is: 11,837.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,141.49 : 28,715.68 = 7,890.57 : x
  2. Step 2: Convert to fraction form
    19,141.49/28,715.68 = 7,890.57/x
  3. Step 3: Cross multiply
    19,141.49x = 28,715.68 × 7,890.57
  4. Step 4: Simplify right side
    19,141.49x = 226,583,083.14
  5. Step 5: Solve for x
    x = 226,583,083.14/19,141.49
  6. Step 6: Final answer
    x = 11,837.28

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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.