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Finding the Fourth Proportional to 8,520.13, 12,860.22 and 8,520.13

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Solution

The fourth proportional to 8,520.13, 12,860.22 and 8,520.13 is: 12,860.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.13 : 12,860.22 = 8,520.13 : x
  2. Step 2: Convert to fraction form
    8,520.13/12,860.22 = 8,520.13/x
  3. Step 3: Cross multiply
    8,520.13x = 12,860.22 × 8,520.13
  4. Step 4: Simplify right side
    8,520.13x = 109,570,714.08
  5. Step 5: Solve for x
    x = 109,570,714.08/8,520.13
  6. Step 6: Final answer
    x = 12,860.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.