Home / 18,320.96-27,438.68-13,378.34

Finding the Fourth Proportional to 18,320.96, 27,438.68 and 13,378.34

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Solution

The fourth proportional to 18,320.96, 27,438.68 and 13,378.34 is: 20,036.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.96 : 27,438.68 = 13,378.34 : x
  2. Step 2: Convert to fraction form
    18,320.96/27,438.68 = 13,378.34/x
  3. Step 3: Cross multiply
    18,320.96x = 27,438.68 × 13,378.34
  4. Step 4: Simplify right side
    18,320.96x = 367,083,990.19
  5. Step 5: Solve for x
    x = 367,083,990.19/18,320.96
  6. Step 6: Final answer
    x = 20,036.29

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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.