Home / 31,213.50-43,075.41-18,949.05

Finding the Fourth Proportional to 31,213.50, 43,075.41 and 18,949.05

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Solution

The fourth proportional to 31,213.50, 43,075.41 and 18,949.05 is: 26,150.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,213.50 : 43,075.41 = 18,949.05 : x
  2. Step 2: Convert to fraction form
    31,213.50/43,075.41 = 18,949.05/x
  3. Step 3: Cross multiply
    31,213.50x = 43,075.41 × 18,949.05
  4. Step 4: Simplify right side
    31,213.50x = 816,238,097.86
  5. Step 5: Solve for x
    x = 816,238,097.86/31,213.50
  6. Step 6: Final answer
    x = 26,150.16

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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.