Home / 20,518.68-30,797.46-10,137.72

Finding the Fourth Proportional to 20,518.68, 30,797.46 and 10,137.72

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Solution

The fourth proportional to 20,518.68, 30,797.46 and 10,137.72 is: 15,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518.68 : 30,797.46 = 10,137.72 : x
  2. Step 2: Convert to fraction form
    20,518.68/30,797.46 = 10,137.72/x
  3. Step 3: Cross multiply
    20,518.68x = 30,797.46 × 10,137.72
  4. Step 4: Simplify right side
    20,518.68x = 312,216,026.19
  5. Step 5: Solve for x
    x = 312,216,026.19/20,518.68
  6. Step 6: Final answer
    x = 15,216.18

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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.