Home / 12,705.45-19,054.72-5,308.36

Finding the Fourth Proportional to 12,705.45, 19,054.72 and 5,308.36

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Solution

The fourth proportional to 12,705.45, 19,054.72 and 5,308.36 is: 7,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,705.45 : 19,054.72 = 5,308.36 : x
  2. Step 2: Convert to fraction form
    12,705.45/19,054.72 = 5,308.36/x
  3. Step 3: Cross multiply
    12,705.45x = 19,054.72 × 5,308.36
  4. Step 4: Simplify right side
    12,705.45x = 101,149,313.46
  5. Step 5: Solve for x
    x = 101,149,313.46/12,705.45
  6. Step 6: Final answer
    x = 7,961.10

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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.