Home / 28,085.16-42,040.06-20,697.96

Finding the Fourth Proportional to 28,085.16, 42,040.06 and 20,697.96

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Solution

The fourth proportional to 28,085.16, 42,040.06 and 20,697.96 is: 30,982.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.16 : 42,040.06 = 20,697.96 : x
  2. Step 2: Convert to fraction form
    28,085.16/42,040.06 = 20,697.96/x
  3. Step 3: Cross multiply
    28,085.16x = 42,040.06 × 20,697.96
  4. Step 4: Simplify right side
    28,085.16x = 870,143,480.28
  5. Step 5: Solve for x
    x = 870,143,480.28/28,085.16
  6. Step 6: Final answer
    x = 30,982.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.