Home / 28,727.60-39,643.32-15,980.12

Finding the Fourth Proportional to 28,727.60, 39,643.32 and 15,980.12

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Solution

The fourth proportional to 28,727.60, 39,643.32 and 15,980.12 is: 22,052.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,727.60 : 39,643.32 = 15,980.12 : x
  2. Step 2: Convert to fraction form
    28,727.60/39,643.32 = 15,980.12/x
  3. Step 3: Cross multiply
    28,727.60x = 39,643.32 × 15,980.12
  4. Step 4: Simplify right side
    28,727.60x = 633,504,812.58
  5. Step 5: Solve for x
    x = 633,504,812.58/28,727.60
  6. Step 6: Final answer
    x = 22,052.14

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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.