Home / 28,272.84-39,016.44-15,697.50

Finding the Fourth Proportional to 28,272.84, 39,016.44 and 15,697.50

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Solution

The fourth proportional to 28,272.84, 39,016.44 and 15,697.50 is: 21,662.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.84 : 39,016.44 = 15,697.50 : x
  2. Step 2: Convert to fraction form
    28,272.84/39,016.44 = 15,697.50/x
  3. Step 3: Cross multiply
    28,272.84x = 39,016.44 × 15,697.50
  4. Step 4: Simplify right side
    28,272.84x = 612,460,566.90
  5. Step 5: Solve for x
    x = 612,460,566.90/28,272.84
  6. Step 6: Final answer
    x = 21,662.51

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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.