Home / 20,020.60-30,030.90-14,115.70

Finding the Fourth Proportional to 20,020.60, 30,030.90 and 14,115.70

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Solution

The fourth proportional to 20,020.60, 30,030.90 and 14,115.70 is: 21,173.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.60 : 30,030.90 = 14,115.70 : x
  2. Step 2: Convert to fraction form
    20,020.60/30,030.90 = 14,115.70/x
  3. Step 3: Cross multiply
    20,020.60x = 30,030.90 × 14,115.70
  4. Step 4: Simplify right side
    20,020.60x = 423,907,175.13
  5. Step 5: Solve for x
    x = 423,907,175.13/20,020.60
  6. Step 6: Final answer
    x = 21,173.55

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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.