Home / 19,320.08-28,981.80-5,469.20

Finding the Fourth Proportional to 19,320.08, 28,981.80 and 5,469.20

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Solution

The fourth proportional to 19,320.08, 28,981.80 and 5,469.20 is: 8,204.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.08 : 28,981.80 = 5,469.20 : x
  2. Step 2: Convert to fraction form
    19,320.08/28,981.80 = 5,469.20/x
  3. Step 3: Cross multiply
    19,320.08x = 28,981.80 × 5,469.20
  4. Step 4: Simplify right side
    19,320.08x = 158,507,260.56
  5. Step 5: Solve for x
    x = 158,507,260.56/19,320.08
  6. Step 6: Final answer
    x = 8,204.28

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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.