Home / 20,088.30-30,120.30-8,992.92

Finding the Fourth Proportional to 20,088.30, 30,120.30 and 8,992.92

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Solution

The fourth proportional to 20,088.30, 30,120.30 and 8,992.92 is: 13,483.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.30 : 30,120.30 = 8,992.92 : x
  2. Step 2: Convert to fraction form
    20,088.30/30,120.30 = 8,992.92/x
  3. Step 3: Cross multiply
    20,088.30x = 30,120.30 × 8,992.92
  4. Step 4: Simplify right side
    20,088.30x = 270,869,448.28
  5. Step 5: Solve for x
    x = 270,869,448.28/20,088.30
  6. Step 6: Final answer
    x = 13,483.94

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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.