Home / 19,142.49-28,717.18-7,891.57

Finding the Fourth Proportional to 19,142.49, 28,717.18 and 7,891.57

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Solution

The fourth proportional to 19,142.49, 28,717.18 and 7,891.57 is: 11,838.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.49 : 28,717.18 = 7,891.57 : x
  2. Step 2: Convert to fraction form
    19,142.49/28,717.18 = 7,891.57/x
  3. Step 3: Cross multiply
    19,142.49x = 28,717.18 × 7,891.57
  4. Step 4: Simplify right side
    19,142.49x = 226,623,636.17
  5. Step 5: Solve for x
    x = 226,623,636.17/19,142.49
  6. Step 6: Final answer
    x = 11,838.78

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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.