Home / 28,089.72-38,763.77-15,514.47

Finding the Fourth Proportional to 28,089.72, 38,763.77 and 15,514.47

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Solution

The fourth proportional to 28,089.72, 38,763.77 and 15,514.47 is: 21,409.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.72 : 38,763.77 = 15,514.47 : x
  2. Step 2: Convert to fraction form
    28,089.72/38,763.77 = 15,514.47/x
  3. Step 3: Cross multiply
    28,089.72x = 38,763.77 × 15,514.47
  4. Step 4: Simplify right side
    28,089.72x = 601,399,269.18
  5. Step 5: Solve for x
    x = 601,399,269.18/28,089.72
  6. Step 6: Final answer
    x = 21,409.94

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Half scale
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Similar ratio
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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.