Home / 12,738.39-19,108.59-4,415.03

Finding the Fourth Proportional to 12,738.39, 19,108.59 and 4,415.03

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Solution

The fourth proportional to 12,738.39, 19,108.59 and 4,415.03 is: 6,622.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.39 : 19,108.59 = 4,415.03 : x
  2. Step 2: Convert to fraction form
    12,738.39/19,108.59 = 4,415.03/x
  3. Step 3: Cross multiply
    12,738.39x = 19,108.59 × 4,415.03
  4. Step 4: Simplify right side
    12,738.39x = 84,364,998.11
  5. Step 5: Solve for x
    x = 84,364,998.11/12,738.39
  6. Step 6: Final answer
    x = 6,622.89

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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.