Home / 12,782.70-19,128.42-8,834.76

Finding the Fourth Proportional to 12,782.70, 19,128.42 and 8,834.76

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Solution

The fourth proportional to 12,782.70, 19,128.42 and 8,834.76 is: 13,220.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782.70 : 19,128.42 = 8,834.76 : x
  2. Step 2: Convert to fraction form
    12,782.70/19,128.42 = 8,834.76/x
  3. Step 3: Cross multiply
    12,782.70x = 19,128.42 × 8,834.76
  4. Step 4: Simplify right side
    12,782.70x = 168,994,999.88
  5. Step 5: Solve for x
    x = 168,994,999.88/12,782.70
  6. Step 6: Final answer
    x = 13,220.60

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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.