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Finding the Fourth Proportional to 19,125.80, 28,623.90 and 19,125.80

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Solution

The fourth proportional to 19,125.80, 28,623.90 and 19,125.80 is: 28,623.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,125.80 : 28,623.90 = 19,125.80 : x
  2. Step 2: Convert to fraction form
    19,125.80/28,623.90 = 19,125.80/x
  3. Step 3: Cross multiply
    19,125.80x = 28,623.90 × 19,125.80
  4. Step 4: Simplify right side
    19,125.80x = 547,454,986.62
  5. Step 5: Solve for x
    x = 547,454,986.62/19,125.80
  6. Step 6: Final answer
    x = 28,623.90

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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.