Home / 21,185.63-31,779.27-6,394.54

Finding the Fourth Proportional to 21,185.63, 31,779.27 and 6,394.54

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Solution

The fourth proportional to 21,185.63, 31,779.27 and 6,394.54 is: 9,592.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.63 : 31,779.27 = 6,394.54 : x
  2. Step 2: Convert to fraction form
    21,185.63/31,779.27 = 6,394.54/x
  3. Step 3: Cross multiply
    21,185.63x = 31,779.27 × 6,394.54
  4. Step 4: Simplify right side
    21,185.63x = 203,213,813.19
  5. Step 5: Solve for x
    x = 203,213,813.19/21,185.63
  6. Step 6: Final answer
    x = 9,592.06

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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.