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Finding the Fourth Proportional to 19,751.99, 29,639.64 and 7,280.72

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Solution

The fourth proportional to 19,751.99, 29,639.64 and 7,280.72 is: 10,925.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,751.99 : 29,639.64 = 7,280.72 : x
  2. Step 2: Convert to fraction form
    19,751.99/29,639.64 = 7,280.72/x
  3. Step 3: Cross multiply
    19,751.99x = 29,639.64 × 7,280.72
  4. Step 4: Simplify right side
    19,751.99x = 215,797,771.54
  5. Step 5: Solve for x
    x = 215,797,771.54/19,751.99
  6. Step 6: Final answer
    x = 10,925.37

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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.