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Finding the Fourth Proportional to 15,029.88, 20,739.52 and 8,314.57

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Solution

The fourth proportional to 15,029.88, 20,739.52 and 8,314.57 is: 11,473.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,029.88 : 20,739.52 = 8,314.57 : x
  2. Step 2: Convert to fraction form
    15,029.88/20,739.52 = 8,314.57/x
  3. Step 3: Cross multiply
    15,029.88x = 20,739.52 × 8,314.57
  4. Step 4: Simplify right side
    15,029.88x = 172,440,190.81
  5. Step 5: Solve for x
    x = 172,440,190.81/15,029.88
  6. Step 6: Final answer
    x = 11,473.16

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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.