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Finding the Fourth Proportional to 8,342.10, 12,513.15 and 7,029.90

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Solution

The fourth proportional to 8,342.10, 12,513.15 and 7,029.90 is: 10,544.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,342.10 : 12,513.15 = 7,029.90 : x
  2. Step 2: Convert to fraction form
    8,342.10/12,513.15 = 7,029.90/x
  3. Step 3: Cross multiply
    8,342.10x = 12,513.15 × 7,029.90
  4. Step 4: Simplify right side
    8,342.10x = 87,966,193.19
  5. Step 5: Solve for x
    x = 87,966,193.19/8,342.10
  6. Step 6: Final answer
    x = 10,544.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.