Home / 20,823.01-31,236.20-6,779.30

Finding the Fourth Proportional to 20,823.01, 31,236.20 and 6,779.30

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Solution

The fourth proportional to 20,823.01, 31,236.20 and 6,779.30 is: 10,169.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.01 : 31,236.20 = 6,779.30 : x
  2. Step 2: Convert to fraction form
    20,823.01/31,236.20 = 6,779.30/x
  3. Step 3: Cross multiply
    20,823.01x = 31,236.20 × 6,779.30
  4. Step 4: Simplify right side
    20,823.01x = 211,759,406.00
  5. Step 5: Solve for x
    x = 211,759,406.00/20,823.01
  6. Step 6: Final answer
    x = 10,169.49

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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.