Home / 20,517.57-30,720.84-10,636.08

Finding the Fourth Proportional to 20,517.57, 30,720.84 and 10,636.08

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Solution

The fourth proportional to 20,517.57, 30,720.84 and 10,636.08 is: 15,925.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.57 : 30,720.84 = 10,636.08 : x
  2. Step 2: Convert to fraction form
    20,517.57/30,720.84 = 10,636.08/x
  3. Step 3: Cross multiply
    20,517.57x = 30,720.84 × 10,636.08
  4. Step 4: Simplify right side
    20,517.57x = 326,749,156.82
  5. Step 5: Solve for x
    x = 326,749,156.82/20,517.57
  6. Step 6: Final answer
    x = 15,925.33

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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.