Home / 28,539.12-39,382.56-15,961.44

Finding the Fourth Proportional to 28,539.12, 39,382.56 and 15,961.44

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Solution

The fourth proportional to 28,539.12, 39,382.56 and 15,961.44 is: 22,025.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.12 : 39,382.56 = 15,961.44 : x
  2. Step 2: Convert to fraction form
    28,539.12/39,382.56 = 15,961.44/x
  3. Step 3: Cross multiply
    28,539.12x = 39,382.56 × 15,961.44
  4. Step 4: Simplify right side
    28,539.12x = 628,602,368.49
  5. Step 5: Solve for x
    x = 628,602,368.49/28,539.12
  6. Step 6: Final answer
    x = 22,025.99

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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.