Home / 28,427.25-39,230.42-15,852.81

Finding the Fourth Proportional to 28,427.25, 39,230.42 and 15,852.81

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Solution

The fourth proportional to 28,427.25, 39,230.42 and 15,852.81 is: 21,877.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.25 : 39,230.42 = 15,852.81 : x
  2. Step 2: Convert to fraction form
    28,427.25/39,230.42 = 15,852.81/x
  3. Step 3: Cross multiply
    28,427.25x = 39,230.42 × 15,852.81
  4. Step 4: Simplify right side
    28,427.25x = 621,912,315.22
  5. Step 5: Solve for x
    x = 621,912,315.22/28,427.25
  6. Step 6: Final answer
    x = 21,877.33

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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.