Home / 18,899.11-26,079.24-10,939.78

Finding the Fourth Proportional to 18,899.11, 26,079.24 and 10,939.78

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Solution

The fourth proportional to 18,899.11, 26,079.24 and 10,939.78 is: 15,096.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.11 : 26,079.24 = 10,939.78 : x
  2. Step 2: Convert to fraction form
    18,899.11/26,079.24 = 10,939.78/x
  3. Step 3: Cross multiply
    18,899.11x = 26,079.24 × 10,939.78
  4. Step 4: Simplify right side
    18,899.11x = 285,301,148.17
  5. Step 5: Solve for x
    x = 285,301,148.17/18,899.11
  6. Step 6: Final answer
    x = 15,096.01

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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.