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Finding the Fourth Proportional to 8,559.42, 12,841.29 and 8,365.02

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Solution

The fourth proportional to 8,559.42, 12,841.29 and 8,365.02 is: 12,549.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.42 : 12,841.29 = 8,365.02 : x
  2. Step 2: Convert to fraction form
    8,559.42/12,841.29 = 8,365.02/x
  3. Step 3: Cross multiply
    8,559.42x = 12,841.29 × 8,365.02
  4. Step 4: Simplify right side
    8,559.42x = 107,417,647.68
  5. Step 5: Solve for x
    x = 107,417,647.68/8,559.42
  6. Step 6: Final answer
    x = 12,549.64

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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.