Home / 12,845.75-19,238.39-10,779.04

Finding the Fourth Proportional to 12,845.75, 19,238.39 and 10,779.04

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Solution

The fourth proportional to 12,845.75, 19,238.39 and 10,779.04 is: 16,143.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,845.75 : 19,238.39 = 10,779.04 : x
  2. Step 2: Convert to fraction form
    12,845.75/19,238.39 = 10,779.04/x
  3. Step 3: Cross multiply
    12,845.75x = 19,238.39 × 10,779.04
  4. Step 4: Simplify right side
    12,845.75x = 207,371,225.26
  5. Step 5: Solve for x
    x = 207,371,225.26/12,845.75
  6. Step 6: Final answer
    x = 16,143.18

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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.