Home / 14,280.80-19,708.24-7,907.36

Finding the Fourth Proportional to 14,280.80, 19,708.24 and 7,907.36

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Solution

The fourth proportional to 14,280.80, 19,708.24 and 7,907.36 is: 10,912.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.80 : 19,708.24 = 7,907.36 : x
  2. Step 2: Convert to fraction form
    14,280.80/19,708.24 = 7,907.36/x
  3. Step 3: Cross multiply
    14,280.80x = 19,708.24 × 7,907.36
  4. Step 4: Simplify right side
    14,280.80x = 155,840,148.65
  5. Step 5: Solve for x
    x = 155,840,148.65/14,280.80
  6. Step 6: Final answer
    x = 10,912.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.