Home / 20,376.24-30,503.76-18,238.02

Finding the Fourth Proportional to 20,376.24, 30,503.76 and 18,238.02

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Solution

The fourth proportional to 20,376.24, 30,503.76 and 18,238.02 is: 27,302.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.24 : 30,503.76 = 18,238.02 : x
  2. Step 2: Convert to fraction form
    20,376.24/30,503.76 = 18,238.02/x
  3. Step 3: Cross multiply
    20,376.24x = 30,503.76 × 18,238.02
  4. Step 4: Simplify right side
    20,376.24x = 556,328,184.96
  5. Step 5: Solve for x
    x = 556,328,184.96/20,376.24
  6. Step 6: Final answer
    x = 27,302.79

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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.