Home / 11,381.13-15,705.48-8,395.89

Finding the Fourth Proportional to 11,381.13, 15,705.48 and 8,395.89

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Solution

The fourth proportional to 11,381.13, 15,705.48 and 8,395.89 is: 11,585.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.13 : 15,705.48 = 8,395.89 : x
  2. Step 2: Convert to fraction form
    11,381.13/15,705.48 = 8,395.89/x
  3. Step 3: Cross multiply
    11,381.13x = 15,705.48 × 8,395.89
  4. Step 4: Simplify right side
    11,381.13x = 131,861,482.48
  5. Step 5: Solve for x
    x = 131,861,482.48/11,381.13
  6. Step 6: Final answer
    x = 11,585.97

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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.