Home / 13,239.90-18,268.92-7,933.50

Finding the Fourth Proportional to 13,239.90, 18,268.92 and 7,933.50

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Solution

The fourth proportional to 13,239.90, 18,268.92 and 7,933.50 is: 10,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.90 : 18,268.92 = 7,933.50 : x
  2. Step 2: Convert to fraction form
    13,239.90/18,268.92 = 7,933.50/x
  3. Step 3: Cross multiply
    13,239.90x = 18,268.92 × 7,933.50
  4. Step 4: Simplify right side
    13,239.90x = 144,936,476.82
  5. Step 5: Solve for x
    x = 144,936,476.82/13,239.90
  6. Step 6: Final answer
    x = 10,946.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.