Home / 21,318.58-31,978.49-6,527.17

Finding the Fourth Proportional to 21,318.58, 31,978.49 and 6,527.17

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Solution

The fourth proportional to 21,318.58, 31,978.49 and 6,527.17 is: 9,790.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.58 : 31,978.49 = 6,527.17 : x
  2. Step 2: Convert to fraction form
    21,318.58/31,978.49 = 6,527.17/x
  3. Step 3: Cross multiply
    21,318.58x = 31,978.49 × 6,527.17
  4. Step 4: Simplify right side
    21,318.58x = 208,729,040.57
  5. Step 5: Solve for x
    x = 208,729,040.57/21,318.58
  6. Step 6: Final answer
    x = 9,790.94

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1.5x scale

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.