Home / 20,740.66-28,626.58-12,239.62

Finding the Fourth Proportional to 20,740.66, 28,626.58 and 12,239.62

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Solution

The fourth proportional to 20,740.66, 28,626.58 and 12,239.62 is: 16,893.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.66 : 28,626.58 = 12,239.62 : x
  2. Step 2: Convert to fraction form
    20,740.66/28,626.58 = 12,239.62/x
  3. Step 3: Cross multiply
    20,740.66x = 28,626.58 × 12,239.62
  4. Step 4: Simplify right side
    20,740.66x = 350,378,461.10
  5. Step 5: Solve for x
    x = 350,378,461.10/20,740.66
  6. Step 6: Final answer
    x = 16,893.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.