Home / 28,268.67-39,012.80-15,693.33

Finding the Fourth Proportional to 28,268.67, 39,012.80 and 15,693.33

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Solution

The fourth proportional to 28,268.67, 39,012.80 and 15,693.33 is: 21,657.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.67 : 39,012.80 = 15,693.33 : x
  2. Step 2: Convert to fraction form
    28,268.67/39,012.80 = 15,693.33/x
  3. Step 3: Cross multiply
    28,268.67x = 39,012.80 × 15,693.33
  4. Step 4: Simplify right side
    28,268.67x = 612,240,666.16
  5. Step 5: Solve for x
    x = 612,240,666.16/28,268.67
  6. Step 6: Final answer
    x = 21,657.92

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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.