Home / 28,075.62-42,119.50-8,355.80

Finding the Fourth Proportional to 28,075.62, 42,119.50 and 8,355.80

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Solution

The fourth proportional to 28,075.62, 42,119.50 and 8,355.80 is: 12,535.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.62 : 42,119.50 = 8,355.80 : x
  2. Step 2: Convert to fraction form
    28,075.62/42,119.50 = 8,355.80/x
  3. Step 3: Cross multiply
    28,075.62x = 42,119.50 × 8,355.80
  4. Step 4: Simplify right side
    28,075.62x = 351,942,118.10
  5. Step 5: Solve for x
    x = 351,942,118.10/28,075.62
  6. Step 6: Final answer
    x = 12,535.51

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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.