Home / 31,015.40-46,523.10-21,173.90

Finding the Fourth Proportional to 31,015.40, 46,523.10 and 21,173.90

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Solution

The fourth proportional to 31,015.40, 46,523.10 and 21,173.90 is: 31,760.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,015.40 : 46,523.10 = 21,173.90 : x
  2. Step 2: Convert to fraction form
    31,015.40/46,523.10 = 21,173.90/x
  3. Step 3: Cross multiply
    31,015.40x = 46,523.10 × 21,173.90
  4. Step 4: Simplify right side
    31,015.40x = 985,075,467.09
  5. Step 5: Solve for x
    x = 985,075,467.09/31,015.40
  6. Step 6: Final answer
    x = 31,760.85

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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.