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Finding the Fourth Proportional to 15,058.17, 20,779.34 and 8,343.41

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Solution

The fourth proportional to 15,058.17, 20,779.34 and 8,343.41 is: 11,513.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,058.17 : 20,779.34 = 8,343.41 : x
  2. Step 2: Convert to fraction form
    15,058.17/20,779.34 = 8,343.41/x
  3. Step 3: Cross multiply
    15,058.17x = 20,779.34 × 8,343.41
  4. Step 4: Simplify right side
    15,058.17x = 173,370,407.54
  5. Step 5: Solve for x
    x = 173,370,407.54/15,058.17
  6. Step 6: Final answer
    x = 11,513.38

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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.