Home / 30,749.82-42,427.44-17,318.40

Finding the Fourth Proportional to 30,749.82, 42,427.44 and 17,318.40

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Solution

The fourth proportional to 30,749.82, 42,427.44 and 17,318.40 is: 23,895.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,749.82 : 42,427.44 = 17,318.40 : x
  2. Step 2: Convert to fraction form
    30,749.82/42,427.44 = 17,318.40/x
  3. Step 3: Cross multiply
    30,749.82x = 42,427.44 × 17,318.40
  4. Step 4: Simplify right side
    30,749.82x = 734,775,376.90
  5. Step 5: Solve for x
    x = 734,775,376.90/30,749.82
  6. Step 6: Final answer
    x = 23,895.27

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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.