Home / 20,870.07-31,311.93-7,723.44

Finding the Fourth Proportional to 20,870.07, 31,311.93 and 7,723.44

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Solution

The fourth proportional to 20,870.07, 31,311.93 and 7,723.44 is: 11,587.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.07 : 31,311.93 = 7,723.44 : x
  2. Step 2: Convert to fraction form
    20,870.07/31,311.93 = 7,723.44/x
  3. Step 3: Cross multiply
    20,870.07x = 31,311.93 × 7,723.44
  4. Step 4: Simplify right side
    20,870.07x = 241,835,812.64
  5. Step 5: Solve for x
    x = 241,835,812.64/20,870.07
  6. Step 6: Final answer
    x = 11,587.69

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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.