Home / 19,191.37-28,745.38-9,309.88

Finding the Fourth Proportional to 19,191.37, 28,745.38 and 9,309.88

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Solution

The fourth proportional to 19,191.37, 28,745.38 and 9,309.88 is: 13,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191.37 : 28,745.38 = 9,309.88 : x
  2. Step 2: Convert to fraction form
    19,191.37/28,745.38 = 9,309.88/x
  3. Step 3: Cross multiply
    19,191.37x = 28,745.38 × 9,309.88
  4. Step 4: Simplify right side
    19,191.37x = 267,616,038.35
  5. Step 5: Solve for x
    x = 267,616,038.35/19,191.37
  6. Step 6: Final answer
    x = 13,944.60

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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.