Home / 13,019.80-19,415.37-12,901.39

Finding the Fourth Proportional to 13,019.80, 19,415.37 and 12,901.39

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Solution

The fourth proportional to 13,019.80, 19,415.37 and 12,901.39 is: 19,238.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.80 : 19,415.37 = 12,901.39 : x
  2. Step 2: Convert to fraction form
    13,019.80/19,415.37 = 12,901.39/x
  3. Step 3: Cross multiply
    13,019.80x = 19,415.37 × 12,901.39
  4. Step 4: Simplify right side
    13,019.80x = 250,485,260.36
  5. Step 5: Solve for x
    x = 250,485,260.36/13,019.80
  6. Step 6: Final answer
    x = 19,238.79

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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.