Home / 18,379.31-25,362.68-10,421.37

Finding the Fourth Proportional to 18,379.31, 25,362.68 and 10,421.37

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Solution

The fourth proportional to 18,379.31, 25,362.68 and 10,421.37 is: 14,381.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.31 : 25,362.68 = 10,421.37 : x
  2. Step 2: Convert to fraction form
    18,379.31/25,362.68 = 10,421.37/x
  3. Step 3: Cross multiply
    18,379.31x = 25,362.68 × 10,421.37
  4. Step 4: Simplify right side
    18,379.31x = 264,313,820.36
  5. Step 5: Solve for x
    x = 264,313,820.36/18,379.31
  6. Step 6: Final answer
    x = 14,381.06

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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.