Home / 13,673.08-18,868.68-7,705.36

Finding the Fourth Proportional to 13,673.08, 18,868.68 and 7,705.36

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Solution

The fourth proportional to 13,673.08, 18,868.68 and 7,705.36 is: 10,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.08 : 18,868.68 = 7,705.36 : x
  2. Step 2: Convert to fraction form
    13,673.08/18,868.68 = 7,705.36/x
  3. Step 3: Cross multiply
    13,673.08x = 18,868.68 × 7,705.36
  4. Step 4: Simplify right side
    13,673.08x = 145,389,972.12
  5. Step 5: Solve for x
    x = 145,389,972.12/13,673.08
  6. Step 6: Final answer
    x = 10,633.30

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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.