Home / 11,389.23-15,714.46-6,912.87

Finding the Fourth Proportional to 11,389.23, 15,714.46 and 6,912.87

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Solution

The fourth proportional to 11,389.23, 15,714.46 and 6,912.87 is: 9,538.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.23 : 15,714.46 = 6,912.87 : x
  2. Step 2: Convert to fraction form
    11,389.23/15,714.46 = 6,912.87/x
  3. Step 3: Cross multiply
    11,389.23x = 15,714.46 × 6,912.87
  4. Step 4: Simplify right side
    11,389.23x = 108,632,019.10
  5. Step 5: Solve for x
    x = 108,632,019.10/11,389.23
  6. Step 6: Final answer
    x = 9,538.14

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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.