Home / 20,365.92-30,551.04-8,680.32

Finding the Fourth Proportional to 20,365.92, 30,551.04 and 8,680.32

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Solution

The fourth proportional to 20,365.92, 30,551.04 and 8,680.32 is: 13,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.92 : 30,551.04 = 8,680.32 : x
  2. Step 2: Convert to fraction form
    20,365.92/30,551.04 = 8,680.32/x
  3. Step 3: Cross multiply
    20,365.92x = 30,551.04 × 8,680.32
  4. Step 4: Simplify right side
    20,365.92x = 265,192,803.53
  5. Step 5: Solve for x
    x = 265,192,803.53/20,365.92
  6. Step 6: Final answer
    x = 13,021.40

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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.