Home / 20,412.74-30,621.75-14,075.84

Finding the Fourth Proportional to 20,412.74, 30,621.75 and 14,075.84

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Solution

The fourth proportional to 20,412.74, 30,621.75 and 14,075.84 is: 21,115.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.74 : 30,621.75 = 14,075.84 : x
  2. Step 2: Convert to fraction form
    20,412.74/30,621.75 = 14,075.84/x
  3. Step 3: Cross multiply
    20,412.74x = 30,621.75 × 14,075.84
  4. Step 4: Simplify right side
    20,412.74x = 431,026,853.52
  5. Step 5: Solve for x
    x = 431,026,853.52/20,412.74
  6. Step 6: Final answer
    x = 21,115.58

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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.