Home / 13,138.34-19,611.59-11,395.58

Finding the Fourth Proportional to 13,138.34, 19,611.59 and 11,395.58

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Solution

The fourth proportional to 13,138.34, 19,611.59 and 11,395.58 is: 17,010.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.34 : 19,611.59 = 11,395.58 : x
  2. Step 2: Convert to fraction form
    13,138.34/19,611.59 = 11,395.58/x
  3. Step 3: Cross multiply
    13,138.34x = 19,611.59 × 11,395.58
  4. Step 4: Simplify right side
    13,138.34x = 223,485,287.74
  5. Step 5: Solve for x
    x = 223,485,287.74/13,138.34
  6. Step 6: Final answer
    x = 17,010.17

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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.