Home / 28,661.06-39,571.53-21,934.67

Finding the Fourth Proportional to 28,661.06, 39,571.53 and 21,934.67

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Solution

The fourth proportional to 28,661.06, 39,571.53 and 21,934.67 is: 30,284.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.06 : 39,571.53 = 21,934.67 : x
  2. Step 2: Convert to fraction form
    28,661.06/39,571.53 = 21,934.67/x
  3. Step 3: Cross multiply
    28,661.06x = 39,571.53 × 21,934.67
  4. Step 4: Simplify right side
    28,661.06x = 867,988,254.09
  5. Step 5: Solve for x
    x = 867,988,254.09/28,661.06
  6. Step 6: Final answer
    x = 30,284.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.