Home / 20,070.70-30,115.39-8,984.89

Finding the Fourth Proportional to 20,070.70, 30,115.39 and 8,984.89

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Solution

The fourth proportional to 20,070.70, 30,115.39 and 8,984.89 is: 13,481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.70 : 30,115.39 = 8,984.89 : x
  2. Step 2: Convert to fraction form
    20,070.70/30,115.39 = 8,984.89/x
  3. Step 3: Cross multiply
    20,070.70x = 30,115.39 × 8,984.89
  4. Step 4: Simplify right side
    20,070.70x = 270,583,368.71
  5. Step 5: Solve for x
    x = 270,583,368.71/20,070.70
  6. Step 6: Final answer
    x = 13,481.51

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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.