Home / 28,272.32-39,015.60-15,697.04

Finding the Fourth Proportional to 28,272.32, 39,015.60 and 15,697.04

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Solution

The fourth proportional to 28,272.32, 39,015.60 and 15,697.04 is: 21,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.32 : 39,015.60 = 15,697.04 : x
  2. Step 2: Convert to fraction form
    28,272.32/39,015.60 = 15,697.04/x
  3. Step 3: Cross multiply
    28,272.32x = 39,015.60 × 15,697.04
  4. Step 4: Simplify right side
    28,272.32x = 612,429,433.82
  5. Step 5: Solve for x
    x = 612,429,433.82/28,272.32
  6. Step 6: Final answer
    x = 21,661.80

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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.