Home / 18,739.91-28,126.26-10,429.31

Finding the Fourth Proportional to 18,739.91, 28,126.26 and 10,429.31

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Solution

The fourth proportional to 18,739.91, 28,126.26 and 10,429.31 is: 15,653.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.91 : 28,126.26 = 10,429.31 : x
  2. Step 2: Convert to fraction form
    18,739.91/28,126.26 = 10,429.31/x
  3. Step 3: Cross multiply
    18,739.91x = 28,126.26 × 10,429.31
  4. Step 4: Simplify right side
    18,739.91x = 293,337,484.68
  5. Step 5: Solve for x
    x = 293,337,484.68/18,739.91
  6. Step 6: Final answer
    x = 15,653.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.