Home / 19,005.30-28,507.95-9,163.80

Finding the Fourth Proportional to 19,005.30, 28,507.95 and 9,163.80

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Solution

The fourth proportional to 19,005.30, 28,507.95 and 9,163.80 is: 13,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.30 : 28,507.95 = 9,163.80 : x
  2. Step 2: Convert to fraction form
    19,005.30/28,507.95 = 9,163.80/x
  3. Step 3: Cross multiply
    19,005.30x = 28,507.95 × 9,163.80
  4. Step 4: Simplify right side
    19,005.30x = 261,241,152.21
  5. Step 5: Solve for x
    x = 261,241,152.21/19,005.30
  6. Step 6: Final answer
    x = 13,745.70

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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.