Home / 20,464.60-30,700.16-8,777.92

Finding the Fourth Proportional to 20,464.60, 30,700.16 and 8,777.92

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Solution

The fourth proportional to 20,464.60, 30,700.16 and 8,777.92 is: 13,168.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.60 : 30,700.16 = 8,777.92 : x
  2. Step 2: Convert to fraction form
    20,464.60/30,700.16 = 8,777.92/x
  3. Step 3: Cross multiply
    20,464.60x = 30,700.16 × 8,777.92
  4. Step 4: Simplify right side
    20,464.60x = 269,483,548.47
  5. Step 5: Solve for x
    x = 269,483,548.47/20,464.60
  6. Step 6: Final answer
    x = 13,168.28

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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.