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Finding the Fourth Proportional to 8,506.13, 12,727.13 and 7,642.85

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Solution

The fourth proportional to 8,506.13, 12,727.13 and 7,642.85 is: 11,435.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,506.13 : 12,727.13 = 7,642.85 : x
  2. Step 2: Convert to fraction form
    8,506.13/12,727.13 = 7,642.85/x
  3. Step 3: Cross multiply
    8,506.13x = 12,727.13 × 7,642.85
  4. Step 4: Simplify right side
    8,506.13x = 97,271,443.67
  5. Step 5: Solve for x
    x = 97,271,443.67/8,506.13
  6. Step 6: Final answer
    x = 11,435.46

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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.