Home / 20,847.65-31,271.82-11,485.93

Finding the Fourth Proportional to 20,847.65, 31,271.82 and 11,485.93

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Solution

The fourth proportional to 20,847.65, 31,271.82 and 11,485.93 is: 17,229.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.65 : 31,271.82 = 11,485.93 : x
  2. Step 2: Convert to fraction form
    20,847.65/31,271.82 = 11,485.93/x
  3. Step 3: Cross multiply
    20,847.65x = 31,271.82 × 11,485.93
  4. Step 4: Simplify right side
    20,847.65x = 359,185,849.53
  5. Step 5: Solve for x
    x = 359,185,849.53/20,847.65
  6. Step 6: Final answer
    x = 17,229.08

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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.