Home / 20,562.48-30,820.32-12,776.64

Finding the Fourth Proportional to 20,562.48, 30,820.32 and 12,776.64

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Solution

The fourth proportional to 20,562.48, 30,820.32 and 12,776.64 is: 19,150.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.48 : 30,820.32 = 12,776.64 : x
  2. Step 2: Convert to fraction form
    20,562.48/30,820.32 = 12,776.64/x
  3. Step 3: Cross multiply
    20,562.48x = 30,820.32 × 12,776.64
  4. Step 4: Simplify right side
    20,562.48x = 393,780,133.32
  5. Step 5: Solve for x
    x = 393,780,133.32/20,562.48
  6. Step 6: Final answer
    x = 19,150.42

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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.