Home / 13,825.12-19,078.67-7,856.80

Finding the Fourth Proportional to 13,825.12, 19,078.67 and 7,856.80

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Solution

The fourth proportional to 13,825.12, 19,078.67 and 7,856.80 is: 10,842.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.12 : 19,078.67 = 7,856.80 : x
  2. Step 2: Convert to fraction form
    13,825.12/19,078.67 = 7,856.80/x
  3. Step 3: Cross multiply
    13,825.12x = 19,078.67 × 7,856.80
  4. Step 4: Simplify right side
    13,825.12x = 149,897,255.17
  5. Step 5: Solve for x
    x = 149,897,255.17/13,825.12
  6. Step 6: Final answer
    x = 10,842.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.