Home / 20,748.60-31,107.06-10,367.64

Finding the Fourth Proportional to 20,748.60, 31,107.06 and 10,367.64

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Solution

The fourth proportional to 20,748.60, 31,107.06 and 10,367.64 is: 15,543.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.60 : 31,107.06 = 10,367.64 : x
  2. Step 2: Convert to fraction form
    20,748.60/31,107.06 = 10,367.64/x
  3. Step 3: Cross multiply
    20,748.60x = 31,107.06 × 10,367.64
  4. Step 4: Simplify right side
    20,748.60x = 322,506,799.54
  5. Step 5: Solve for x
    x = 322,506,799.54/20,748.60
  6. Step 6: Final answer
    x = 15,543.55

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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.