Home / 28,145.04-42,205.56-8,423.28

Finding the Fourth Proportional to 28,145.04, 42,205.56 and 8,423.28

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Solution

The fourth proportional to 28,145.04, 42,205.56 and 8,423.28 is: 12,631.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.04 : 42,205.56 = 8,423.28 : x
  2. Step 2: Convert to fraction form
    28,145.04/42,205.56 = 8,423.28/x
  3. Step 3: Cross multiply
    28,145.04x = 42,205.56 × 8,423.28
  4. Step 4: Simplify right side
    28,145.04x = 355,509,249.44
  5. Step 5: Solve for x
    x = 355,509,249.44/28,145.04
  6. Step 6: Final answer
    x = 12,631.33

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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.