Home / 20,528.52-30,783.21-10,665.15

Finding the Fourth Proportional to 20,528.52, 30,783.21 and 10,665.15

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Solution

The fourth proportional to 20,528.52, 30,783.21 and 10,665.15 is: 15,992.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.52 : 30,783.21 = 10,665.15 : x
  2. Step 2: Convert to fraction form
    20,528.52/30,783.21 = 10,665.15/x
  3. Step 3: Cross multiply
    20,528.52x = 30,783.21 × 10,665.15
  4. Step 4: Simplify right side
    20,528.52x = 328,307,629.85
  5. Step 5: Solve for x
    x = 328,307,629.85/20,528.52
  6. Step 6: Final answer
    x = 15,992.76

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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.