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Finding the Fourth Proportional to 8,971.25, 13,520.66 and 8,971.25

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Solution

The fourth proportional to 8,971.25, 13,520.66 and 8,971.25 is: 13,520.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.25 : 13,520.66 = 8,971.25 : x
  2. Step 2: Convert to fraction form
    8,971.25/13,520.66 = 8,971.25/x
  3. Step 3: Cross multiply
    8,971.25x = 13,520.66 × 8,971.25
  4. Step 4: Simplify right side
    8,971.25x = 121,297,108.57
  5. Step 5: Solve for x
    x = 121,297,108.57/8,971.25
  6. Step 6: Final answer
    x = 13,520.66

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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.