Home / 28,205.88-42,308.81-7,429.38

Finding the Fourth Proportional to 28,205.88, 42,308.81 and 7,429.38

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Solution

The fourth proportional to 28,205.88, 42,308.81 and 7,429.38 is: 11,144.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205.88 : 42,308.81 = 7,429.38 : x
  2. Step 2: Convert to fraction form
    28,205.88/42,308.81 = 7,429.38/x
  3. Step 3: Cross multiply
    28,205.88x = 42,308.81 × 7,429.38
  4. Step 4: Simplify right side
    28,205.88x = 314,328,226.84
  5. Step 5: Solve for x
    x = 314,328,226.84/28,205.88
  6. Step 6: Final answer
    x = 11,144.07

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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.