Home / 20,343.60-30,515.40-13,367.70

Finding the Fourth Proportional to 20,343.60, 30,515.40 and 13,367.70

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Solution

The fourth proportional to 20,343.60, 30,515.40 and 13,367.70 is: 20,051.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.60 : 30,515.40 = 13,367.70 : x
  2. Step 2: Convert to fraction form
    20,343.60/30,515.40 = 13,367.70/x
  3. Step 3: Cross multiply
    20,343.60x = 30,515.40 × 13,367.70
  4. Step 4: Simplify right side
    20,343.60x = 407,920,712.58
  5. Step 5: Solve for x
    x = 407,920,712.58/20,343.60
  6. Step 6: Final answer
    x = 20,051.55

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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.