Home / 20,075.43-30,140.73-10,221.33

Finding the Fourth Proportional to 20,075.43, 30,140.73 and 10,221.33

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Solution

The fourth proportional to 20,075.43, 30,140.73 and 10,221.33 is: 15,346.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.43 : 30,140.73 = 10,221.33 : x
  2. Step 2: Convert to fraction form
    20,075.43/30,140.73 = 10,221.33/x
  3. Step 3: Cross multiply
    20,075.43x = 30,140.73 × 10,221.33
  4. Step 4: Simplify right side
    20,075.43x = 308,078,347.77
  5. Step 5: Solve for x
    x = 308,078,347.77/20,075.43
  6. Step 6: Final answer
    x = 15,346.04

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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.