Home / 15,075.55-20,780.28-11,883.67

Finding the Fourth Proportional to 15,075.55, 20,780.28 and 11,883.67

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Solution

The fourth proportional to 15,075.55, 20,780.28 and 11,883.67 is: 16,380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.55 : 20,780.28 = 11,883.67 : x
  2. Step 2: Convert to fraction form
    15,075.55/20,780.28 = 11,883.67/x
  3. Step 3: Cross multiply
    15,075.55x = 20,780.28 × 11,883.67
  4. Step 4: Simplify right side
    15,075.55x = 246,945,990.03
  5. Step 5: Solve for x
    x = 246,945,990.03/15,075.55
  6. Step 6: Final answer
    x = 16,380.56

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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.