Home / 21,318.81-31,977.07-6,527.74

Finding the Fourth Proportional to 21,318.81, 31,977.07 and 6,527.74

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Solution

The fourth proportional to 21,318.81, 31,977.07 and 6,527.74 is: 9,791.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.81 : 31,977.07 = 6,527.74 : x
  2. Step 2: Convert to fraction form
    21,318.81/31,977.07 = 6,527.74/x
  3. Step 3: Cross multiply
    21,318.81x = 31,977.07 × 6,527.74
  4. Step 4: Simplify right side
    21,318.81x = 208,737,998.92
  5. Step 5: Solve for x
    x = 208,737,998.92/21,318.81
  6. Step 6: Final answer
    x = 9,791.26

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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.