Home / 20,975.95-28,945.96-12,017.24

Finding the Fourth Proportional to 20,975.95, 28,945.96 and 12,017.24

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Solution

The fourth proportional to 20,975.95, 28,945.96 and 12,017.24 is: 16,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.95 : 28,945.96 = 12,017.24 : x
  2. Step 2: Convert to fraction form
    20,975.95/28,945.96 = 12,017.24/x
  3. Step 3: Cross multiply
    20,975.95x = 28,945.96 × 12,017.24
  4. Step 4: Simplify right side
    20,975.95x = 347,850,548.35
  5. Step 5: Solve for x
    x = 347,850,548.35/20,975.95
  6. Step 6: Final answer
    x = 16,583.30

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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.