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Finding the Fourth Proportional to 19,300.28, 28,950.48 and 5,449.28

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Solution

The fourth proportional to 19,300.28, 28,950.48 and 5,449.28 is: 8,173.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,300.28 : 28,950.48 = 5,449.28 : x
  2. Step 2: Convert to fraction form
    19,300.28/28,950.48 = 5,449.28/x
  3. Step 3: Cross multiply
    19,300.28x = 28,950.48 × 5,449.28
  4. Step 4: Simplify right side
    19,300.28x = 157,759,271.65
  5. Step 5: Solve for x
    x = 157,759,271.65/19,300.28
  6. Step 6: Final answer
    x = 8,173.94

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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.