Home / 18,389.72-25,379.68-10,838.48

Finding the Fourth Proportional to 18,389.72, 25,379.68 and 10,838.48

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Solution

The fourth proportional to 18,389.72, 25,379.68 and 10,838.48 is: 14,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,389.72 : 25,379.68 = 10,838.48 : x
  2. Step 2: Convert to fraction form
    18,389.72/25,379.68 = 10,838.48/x
  3. Step 3: Cross multiply
    18,389.72x = 25,379.68 × 10,838.48
  4. Step 4: Simplify right side
    18,389.72x = 275,077,154.09
  5. Step 5: Solve for x
    x = 275,077,154.09/18,389.72
  6. Step 6: Final answer
    x = 14,958.20

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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.