Home / 20,088.90-30,137.13-8,081.96

Finding the Fourth Proportional to 20,088.90, 30,137.13 and 8,081.96

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Solution

The fourth proportional to 20,088.90, 30,137.13 and 8,081.96 is: 12,124.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.90 : 30,137.13 = 8,081.96 : x
  2. Step 2: Convert to fraction form
    20,088.90/30,137.13 = 8,081.96/x
  3. Step 3: Cross multiply
    20,088.90x = 30,137.13 × 8,081.96
  4. Step 4: Simplify right side
    20,088.90x = 243,566,928.49
  5. Step 5: Solve for x
    x = 243,566,928.49/20,088.90
  6. Step 6: Final answer
    x = 12,124.45

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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.