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Finding the Fourth Proportional to 15,058.68, 20,780.64 and 8,344.32

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Solution

The fourth proportional to 15,058.68, 20,780.64 and 8,344.32 is: 11,514.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,058.68 : 20,780.64 = 8,344.32 : x
  2. Step 2: Convert to fraction form
    15,058.68/20,780.64 = 8,344.32/x
  3. Step 3: Cross multiply
    15,058.68x = 20,780.64 × 8,344.32
  4. Step 4: Simplify right side
    15,058.68x = 173,400,309.96
  5. Step 5: Solve for x
    x = 173,400,309.96/15,058.68
  6. Step 6: Final answer
    x = 11,514.97

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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.