Home / 34,643.75-47,804.90-21,218.81

Finding the Fourth Proportional to 34,643.75, 47,804.90 and 21,218.81

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Solution

The fourth proportional to 34,643.75, 47,804.90 and 21,218.81 is: 29,279.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,643.75 : 47,804.90 = 21,218.81 : x
  2. Step 2: Convert to fraction form
    34,643.75/47,804.90 = 21,218.81/x
  3. Step 3: Cross multiply
    34,643.75x = 47,804.90 × 21,218.81
  4. Step 4: Simplify right side
    34,643.75x = 1,014,362,745.05
  5. Step 5: Solve for x
    x = 1,014,362,745.05/34,643.75
  6. Step 6: Final answer
    x = 29,279.82

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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.