Home / 19,269.29-28,908.79-5,418.29

Finding the Fourth Proportional to 19,269.29, 28,908.79 and 5,418.29

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Solution

The fourth proportional to 19,269.29, 28,908.79 and 5,418.29 is: 8,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,269.29 : 28,908.79 = 5,418.29 : x
  2. Step 2: Convert to fraction form
    19,269.29/28,908.79 = 5,418.29/x
  3. Step 3: Cross multiply
    19,269.29x = 28,908.79 × 5,418.29
  4. Step 4: Simplify right side
    19,269.29x = 156,636,266.50
  5. Step 5: Solve for x
    x = 156,636,266.50/19,269.29
  6. Step 6: Final answer
    x = 8,128.80

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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.