Home / 20,412.24-30,621-14,075.34

Finding the Fourth Proportional to 20,412.24, 30,621 and 14,075.34

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Solution

The fourth proportional to 20,412.24, 30,621 and 14,075.34 is: 21,114.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.24 : 30,621 = 14,075.34 : x
  2. Step 2: Convert to fraction form
    20,412.24/30,621 = 14,075.34/x
  3. Step 3: Cross multiply
    20,412.24x = 30,621 × 14,075.34
  4. Step 4: Simplify right side
    20,412.24x = 431,000,986.14
  5. Step 5: Solve for x
    x = 431,000,986.14/20,412.24
  6. Step 6: Final answer
    x = 21,114.83

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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.