Home / 20,266.67-27,980.84-13,903.92

Finding the Fourth Proportional to 20,266.67, 27,980.84 and 13,903.92

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Solution

The fourth proportional to 20,266.67, 27,980.84 and 13,903.92 is: 19,196.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.67 : 27,980.84 = 13,903.92 : x
  2. Step 2: Convert to fraction form
    20,266.67/27,980.84 = 13,903.92/x
  3. Step 3: Cross multiply
    20,266.67x = 27,980.84 × 13,903.92
  4. Step 4: Simplify right side
    20,266.67x = 389,043,395.65
  5. Step 5: Solve for x
    x = 389,043,395.65/20,266.67
  6. Step 6: Final answer
    x = 19,196.21

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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.