Home / 15,412.80-21,269.67-8,339.23

Finding the Fourth Proportional to 15,412.80, 21,269.67 and 8,339.23

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Solution

The fourth proportional to 15,412.80, 21,269.67 and 8,339.23 is: 11,508.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.80 : 21,269.67 = 8,339.23 : x
  2. Step 2: Convert to fraction form
    15,412.80/21,269.67 = 8,339.23/x
  3. Step 3: Cross multiply
    15,412.80x = 21,269.67 × 8,339.23
  4. Step 4: Simplify right side
    15,412.80x = 177,372,542.96
  5. Step 5: Solve for x
    x = 177,372,542.96/15,412.80
  6. Step 6: Final answer
    x = 11,508.13

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Double scale
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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.