Home / 20,923.74-31,376.58-7,766.46

Finding the Fourth Proportional to 20,923.74, 31,376.58 and 7,766.46

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Solution

The fourth proportional to 20,923.74, 31,376.58 and 7,766.46 is: 11,646.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.74 : 31,376.58 = 7,766.46 : x
  2. Step 2: Convert to fraction form
    20,923.74/31,376.58 = 7,766.46/x
  3. Step 3: Cross multiply
    20,923.74x = 31,376.58 × 7,766.46
  4. Step 4: Simplify right side
    20,923.74x = 243,684,953.51
  5. Step 5: Solve for x
    x = 243,684,953.51/20,923.74
  6. Step 6: Final answer
    x = 11,646.34

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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.