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Finding the Fourth Proportional to 15,023.58, 20,732.18 and 8,309.06

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Solution

The fourth proportional to 15,023.58, 20,732.18 and 8,309.06 is: 11,466.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,023.58 : 20,732.18 = 8,309.06 : x
  2. Step 2: Convert to fraction form
    15,023.58/20,732.18 = 8,309.06/x
  3. Step 3: Cross multiply
    15,023.58x = 20,732.18 × 8,309.06
  4. Step 4: Simplify right side
    15,023.58x = 172,265,000.15
  5. Step 5: Solve for x
    x = 172,265,000.15/15,023.58
  6. Step 6: Final answer
    x = 11,466.31

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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.