Home / 13,285.56-19,942.42-9,779.60

Finding the Fourth Proportional to 13,285.56, 19,942.42 and 9,779.60

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Solution

The fourth proportional to 13,285.56, 19,942.42 and 9,779.60 is: 14,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.56 : 19,942.42 = 9,779.60 : x
  2. Step 2: Convert to fraction form
    13,285.56/19,942.42 = 9,779.60/x
  3. Step 3: Cross multiply
    13,285.56x = 19,942.42 × 9,779.60
  4. Step 4: Simplify right side
    13,285.56x = 195,028,890.63
  5. Step 5: Solve for x
    x = 195,028,890.63/13,285.56
  6. Step 6: Final answer
    x = 14,679.76

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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.