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Finding the Fourth Proportional to 19,751.87, 29,639.49 and 7,280.65

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Solution

The fourth proportional to 19,751.87, 29,639.49 and 7,280.65 is: 10,925.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,751.87 : 29,639.49 = 7,280.65 : x
  2. Step 2: Convert to fraction form
    19,751.87/29,639.49 = 7,280.65/x
  3. Step 3: Cross multiply
    19,751.87x = 29,639.49 × 7,280.65
  4. Step 4: Simplify right side
    19,751.87x = 215,794,678.77
  5. Step 5: Solve for x
    x = 215,794,678.77/19,751.87
  6. Step 6: Final answer
    x = 10,925.28

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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.