Home / 9,942.40-14,912.81-5,779.75

Finding the Fourth Proportional to 9,942.40, 14,912.81 and 5,779.75

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Solution

The fourth proportional to 9,942.40, 14,912.81 and 5,779.75 is: 8,669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,942.40 : 14,912.81 = 5,779.75 : x
  2. Step 2: Convert to fraction form
    9,942.40/14,912.81 = 5,779.75/x
  3. Step 3: Cross multiply
    9,942.40x = 14,912.81 × 5,779.75
  4. Step 4: Simplify right side
    9,942.40x = 86,192,329.56
  5. Step 5: Solve for x
    x = 86,192,329.56/9,942.40
  6. Step 6: Final answer
    x = 8,669.17

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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.