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Finding the Fourth Proportional to 19,003.65, 28,520.07 and 18,028.04

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Solution

The fourth proportional to 19,003.65, 28,520.07 and 18,028.04 is: 27,055.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,003.65 : 28,520.07 = 18,028.04 : x
  2. Step 2: Convert to fraction form
    19,003.65/28,520.07 = 18,028.04/x
  3. Step 3: Cross multiply
    19,003.65x = 28,520.07 × 18,028.04
  4. Step 4: Simplify right side
    19,003.65x = 514,160,820.16
  5. Step 5: Solve for x
    x = 514,160,820.16/19,003.65
  6. Step 6: Final answer
    x = 27,055.90

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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.