Home / 13,977.22-19,288.45-7,928.61

Finding the Fourth Proportional to 13,977.22, 19,288.45 and 7,928.61

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Solution

The fourth proportional to 13,977.22, 19,288.45 and 7,928.61 is: 10,941.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.22 : 19,288.45 = 7,928.61 : x
  2. Step 2: Convert to fraction form
    13,977.22/19,288.45 = 7,928.61/x
  3. Step 3: Cross multiply
    13,977.22x = 19,288.45 × 7,928.61
  4. Step 4: Simplify right side
    13,977.22x = 152,930,597.55
  5. Step 5: Solve for x
    x = 152,930,597.55/13,977.22
  6. Step 6: Final answer
    x = 10,941.42

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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.