Home / 13,239.84-19,859.73-8,312.94

Finding the Fourth Proportional to 13,239.84, 19,859.73 and 8,312.94

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Solution

The fourth proportional to 13,239.84, 19,859.73 and 8,312.94 is: 12,469.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.84 : 19,859.73 = 8,312.94 : x
  2. Step 2: Convert to fraction form
    13,239.84/19,859.73 = 8,312.94/x
  3. Step 3: Cross multiply
    13,239.84x = 19,859.73 × 8,312.94
  4. Step 4: Simplify right side
    13,239.84x = 165,092,609.14
  5. Step 5: Solve for x
    x = 165,092,609.14/13,239.84
  6. Step 6: Final answer
    x = 12,469.38

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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.