Home / 13,215.40-19,794.30-11,756.20

Finding the Fourth Proportional to 13,215.40, 19,794.30 and 11,756.20

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Solution

The fourth proportional to 13,215.40, 19,794.30 and 11,756.20 is: 17,608.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.40 : 19,794.30 = 11,756.20 : x
  2. Step 2: Convert to fraction form
    13,215.40/19,794.30 = 11,756.20/x
  3. Step 3: Cross multiply
    13,215.40x = 19,794.30 × 11,756.20
  4. Step 4: Simplify right side
    13,215.40x = 232,705,749.66
  5. Step 5: Solve for x
    x = 232,705,749.66/13,215.40
  6. Step 6: Final answer
    x = 17,608.68

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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.