Home / 20,376.79-30,559.25-7,894.03

Finding the Fourth Proportional to 20,376.79, 30,559.25 and 7,894.03

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Solution

The fourth proportional to 20,376.79, 30,559.25 and 7,894.03 is: 11,838.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.79 : 30,559.25 = 7,894.03 : x
  2. Step 2: Convert to fraction form
    20,376.79/30,559.25 = 7,894.03/x
  3. Step 3: Cross multiply
    20,376.79x = 30,559.25 × 7,894.03
  4. Step 4: Simplify right side
    20,376.79x = 241,235,483.48
  5. Step 5: Solve for x
    x = 241,235,483.48/20,376.79
  6. Step 6: Final answer
    x = 11,838.74

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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.