Home / 39,172.36-58,759.88-12,879.12

Finding the Fourth Proportional to 39,172.36, 58,759.88 and 12,879.12

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Solution

The fourth proportional to 39,172.36, 58,759.88 and 12,879.12 is: 19,319.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,172.36 : 58,759.88 = 12,879.12 : x
  2. Step 2: Convert to fraction form
    39,172.36/58,759.88 = 12,879.12/x
  3. Step 3: Cross multiply
    39,172.36x = 58,759.88 × 12,879.12
  4. Step 4: Simplify right side
    39,172.36x = 756,775,545.71
  5. Step 5: Solve for x
    x = 756,775,545.71/39,172.36
  6. Step 6: Final answer
    x = 19,319.12

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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.