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Finding the Fourth Proportional to 9,381.08, 12,923.34 and 8,707.16

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Solution

The fourth proportional to 9,381.08, 12,923.34 and 8,707.16 is: 11,994.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,381.08 : 12,923.34 = 8,707.16 : x
  2. Step 2: Convert to fraction form
    9,381.08/12,923.34 = 8,707.16/x
  3. Step 3: Cross multiply
    9,381.08x = 12,923.34 × 8,707.16
  4. Step 4: Simplify right side
    9,381.08x = 112,525,589.11
  5. Step 5: Solve for x
    x = 112,525,589.11/9,381.08
  6. Step 6: Final answer
    x = 11,994.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.