Home / 20,784.16-31,177.68-5,992.48

Finding the Fourth Proportional to 20,784.16, 31,177.68 and 5,992.48

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Solution

The fourth proportional to 20,784.16, 31,177.68 and 5,992.48 is: 8,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.16 : 31,177.68 = 5,992.48 : x
  2. Step 2: Convert to fraction form
    20,784.16/31,177.68 = 5,992.48/x
  3. Step 3: Cross multiply
    20,784.16x = 31,177.68 × 5,992.48
  4. Step 4: Simplify right side
    20,784.16x = 186,831,623.85
  5. Step 5: Solve for x
    x = 186,831,623.85/20,784.16
  6. Step 6: Final answer
    x = 8,989.14

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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.