Home / 20,784.63-31,181.57-5,992.40

Finding the Fourth Proportional to 20,784.63, 31,181.57 and 5,992.40

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Solution

The fourth proportional to 20,784.63, 31,181.57 and 5,992.40 is: 8,989.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.63 : 31,181.57 = 5,992.40 : x
  2. Step 2: Convert to fraction form
    20,784.63/31,181.57 = 5,992.40/x
  3. Step 3: Cross multiply
    20,784.63x = 31,181.57 × 5,992.40
  4. Step 4: Simplify right side
    20,784.63x = 186,852,371.13
  5. Step 5: Solve for x
    x = 186,852,371.13/20,784.63
  6. Step 6: Final answer
    x = 8,989.93

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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.