Home / 28,166.50-38,828.36-21,440.41

Finding the Fourth Proportional to 28,166.50, 38,828.36 and 21,440.41

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Solution

The fourth proportional to 28,166.50, 38,828.36 and 21,440.41 is: 29,556.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.50 : 38,828.36 = 21,440.41 : x
  2. Step 2: Convert to fraction form
    28,166.50/38,828.36 = 21,440.41/x
  3. Step 3: Cross multiply
    28,166.50x = 38,828.36 × 21,440.41
  4. Step 4: Simplify right side
    28,166.50x = 832,496,132.97
  5. Step 5: Solve for x
    x = 832,496,132.97/28,166.50
  6. Step 6: Final answer
    x = 29,556.25

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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.