Home / 20,814.02-31,218.12-6,774.18

Finding the Fourth Proportional to 20,814.02, 31,218.12 and 6,774.18

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Solution

The fourth proportional to 20,814.02, 31,218.12 and 6,774.18 is: 10,160.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.02 : 31,218.12 = 6,774.18 : x
  2. Step 2: Convert to fraction form
    20,814.02/31,218.12 = 6,774.18/x
  3. Step 3: Cross multiply
    20,814.02x = 31,218.12 × 6,774.18
  4. Step 4: Simplify right side
    20,814.02x = 211,477,164.14
  5. Step 5: Solve for x
    x = 211,477,164.14/20,814.02
  6. Step 6: Final answer
    x = 10,160.33

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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.