Home / 20,427.16-30,640.38-11,643.34

Finding the Fourth Proportional to 20,427.16, 30,640.38 and 11,643.34

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Solution

The fourth proportional to 20,427.16, 30,640.38 and 11,643.34 is: 17,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.16 : 30,640.38 = 11,643.34 : x
  2. Step 2: Convert to fraction form
    20,427.16/30,640.38 = 11,643.34/x
  3. Step 3: Cross multiply
    20,427.16x = 30,640.38 × 11,643.34
  4. Step 4: Simplify right side
    20,427.16x = 356,756,362.07
  5. Step 5: Solve for x
    x = 356,756,362.07/20,427.16
  6. Step 6: Final answer
    x = 17,464.80

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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.