Home / 28,015.67-38,661.64-15,268.86

Finding the Fourth Proportional to 28,015.67, 38,661.64 and 15,268.86

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Solution

The fourth proportional to 28,015.67, 38,661.64 and 15,268.86 is: 21,071.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.67 : 38,661.64 = 15,268.86 : x
  2. Step 2: Convert to fraction form
    28,015.67/38,661.64 = 15,268.86/x
  3. Step 3: Cross multiply
    28,015.67x = 38,661.64 × 15,268.86
  4. Step 4: Simplify right side
    28,015.67x = 590,319,168.53
  5. Step 5: Solve for x
    x = 590,319,168.53/28,015.67
  6. Step 6: Final answer
    x = 21,071.04

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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.