Home / 21,380.35-32,075.77-7,340.57

Finding the Fourth Proportional to 21,380.35, 32,075.77 and 7,340.57

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Solution

The fourth proportional to 21,380.35, 32,075.77 and 7,340.57 is: 11,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.35 : 32,075.77 = 7,340.57 : x
  2. Step 2: Convert to fraction form
    21,380.35/32,075.77 = 7,340.57/x
  3. Step 3: Cross multiply
    21,380.35x = 32,075.77 × 7,340.57
  4. Step 4: Simplify right side
    21,380.35x = 235,454,591.38
  5. Step 5: Solve for x
    x = 235,454,591.38/21,380.35
  6. Step 6: Final answer
    x = 11,012.67

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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.