Home / 13,409.08-18,504.45-7,743.75

Finding the Fourth Proportional to 13,409.08, 18,504.45 and 7,743.75

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Solution

The fourth proportional to 13,409.08, 18,504.45 and 7,743.75 is: 10,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.08 : 18,504.45 = 7,743.75 : x
  2. Step 2: Convert to fraction form
    13,409.08/18,504.45 = 7,743.75/x
  3. Step 3: Cross multiply
    13,409.08x = 18,504.45 × 7,743.75
  4. Step 4: Simplify right side
    13,409.08x = 143,293,834.69
  5. Step 5: Solve for x
    x = 143,293,834.69/13,409.08
  6. Step 6: Final answer
    x = 10,686.33

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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.