Home / 11,918.16-16,431-10,232.28

Finding the Fourth Proportional to 11,918.16, 16,431 and 10,232.28

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Solution

The fourth proportional to 11,918.16, 16,431 and 10,232.28 is: 14,106.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.16 : 16,431 = 10,232.28 : x
  2. Step 2: Convert to fraction form
    11,918.16/16,431 = 10,232.28/x
  3. Step 3: Cross multiply
    11,918.16x = 16,431 × 10,232.28
  4. Step 4: Simplify right side
    11,918.16x = 168,126,592.68
  5. Step 5: Solve for x
    x = 168,126,592.68/11,918.16
  6. Step 6: Final answer
    x = 14,106.76

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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.