Home / 20,075.90-30,132.36-10,222.28

Finding the Fourth Proportional to 20,075.90, 30,132.36 and 10,222.28

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Solution

The fourth proportional to 20,075.90, 30,132.36 and 10,222.28 is: 15,342.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.90 : 30,132.36 = 10,222.28 : x
  2. Step 2: Convert to fraction form
    20,075.90/30,132.36 = 10,222.28/x
  3. Step 3: Cross multiply
    20,075.90x = 30,132.36 × 10,222.28
  4. Step 4: Simplify right side
    20,075.90x = 308,021,420.98
  5. Step 5: Solve for x
    x = 308,021,420.98/20,075.90
  6. Step 6: Final answer
    x = 15,342.84

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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.