Home / 13,138.02-19,620.41-11,686.50

Finding the Fourth Proportional to 13,138.02, 19,620.41 and 11,686.50

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Solution

The fourth proportional to 13,138.02, 19,620.41 and 11,686.50 is: 17,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.02 : 19,620.41 = 11,686.50 : x
  2. Step 2: Convert to fraction form
    13,138.02/19,620.41 = 11,686.50/x
  3. Step 3: Cross multiply
    13,138.02x = 19,620.41 × 11,686.50
  4. Step 4: Simplify right side
    13,138.02x = 229,293,863.03
  5. Step 5: Solve for x
    x = 229,293,863.03/13,138.02
  6. Step 6: Final answer
    x = 17,452.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.