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Finding the Fourth Proportional to 20,176.80, 30,232.80 and 19,010.40

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Solution

The fourth proportional to 20,176.80, 30,232.80 and 19,010.40 is: 28,485.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,176.80 : 30,232.80 = 19,010.40 : x
  2. Step 2: Convert to fraction form
    20,176.80/30,232.80 = 19,010.40/x
  3. Step 3: Cross multiply
    20,176.80x = 30,232.80 × 19,010.40
  4. Step 4: Simplify right side
    20,176.80x = 574,737,621.12
  5. Step 5: Solve for x
    x = 574,737,621.12/20,176.80
  6. Step 6: Final answer
    x = 28,485.07

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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.