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Finding the Fourth Proportional to 15,058.19, 20,780.03 and 8,343.80

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Solution

The fourth proportional to 15,058.19, 20,780.03 and 8,343.80 is: 11,514.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,058.19 : 20,780.03 = 8,343.80 : x
  2. Step 2: Convert to fraction form
    15,058.19/20,780.03 = 8,343.80/x
  3. Step 3: Cross multiply
    15,058.19x = 20,780.03 × 8,343.80
  4. Step 4: Simplify right side
    15,058.19x = 173,384,331.27
  5. Step 5: Solve for x
    x = 173,384,331.27/15,058.19
  6. Step 6: Final answer
    x = 11,514.29

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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.