Home / 28,268.68-39,010.80-15,693.52

Finding the Fourth Proportional to 28,268.68, 39,010.80 and 15,693.52

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Solution

The fourth proportional to 28,268.68, 39,010.80 and 15,693.52 is: 21,657.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.68 : 39,010.80 = 15,693.52 : x
  2. Step 2: Convert to fraction form
    28,268.68/39,010.80 = 15,693.52/x
  3. Step 3: Cross multiply
    28,268.68x = 39,010.80 × 15,693.52
  4. Step 4: Simplify right side
    28,268.68x = 612,216,770.02
  5. Step 5: Solve for x
    x = 612,216,770.02/28,268.68
  6. Step 6: Final answer
    x = 21,657.07

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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.