Home / 13,890.24-20,844-10,135.44

Finding the Fourth Proportional to 13,890.24, 20,844 and 10,135.44

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Solution

The fourth proportional to 13,890.24, 20,844 and 10,135.44 is: 15,209.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.24 : 20,844 = 10,135.44 : x
  2. Step 2: Convert to fraction form
    13,890.24/20,844 = 10,135.44/x
  3. Step 3: Cross multiply
    13,890.24x = 20,844 × 10,135.44
  4. Step 4: Simplify right side
    13,890.24x = 211,263,111.36
  5. Step 5: Solve for x
    x = 211,263,111.36/13,890.24
  6. Step 6: Final answer
    x = 15,209.46

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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.