Home / 28,980.14-39,990.32-16,232.32

Finding the Fourth Proportional to 28,980.14, 39,990.32 and 16,232.32

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Solution

The fourth proportional to 28,980.14, 39,990.32 and 16,232.32 is: 22,399.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980.14 : 39,990.32 = 16,232.32 : x
  2. Step 2: Convert to fraction form
    28,980.14/39,990.32 = 16,232.32/x
  3. Step 3: Cross multiply
    28,980.14x = 39,990.32 × 16,232.32
  4. Step 4: Simplify right side
    28,980.14x = 649,135,836.14
  5. Step 5: Solve for x
    x = 649,135,836.14/28,980.14
  6. Step 6: Final answer
    x = 22,399.33

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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.