Home / 9,989.47-14,986.86-3,415.65

Finding the Fourth Proportional to 9,989.47, 14,986.86 and 3,415.65

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Solution

The fourth proportional to 9,989.47, 14,986.86 and 3,415.65 is: 5,124.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.47 : 14,986.86 = 3,415.65 : x
  2. Step 2: Convert to fraction form
    9,989.47/14,986.86 = 3,415.65/x
  3. Step 3: Cross multiply
    9,989.47x = 14,986.86 × 3,415.65
  4. Step 4: Simplify right side
    9,989.47x = 51,189,868.36
  5. Step 5: Solve for x
    x = 51,189,868.36/9,989.47
  6. Step 6: Final answer
    x = 5,124.38

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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.