Home / 28,228.52-42,342.80-7,170.14

Finding the Fourth Proportional to 28,228.52, 42,342.80 and 7,170.14

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Solution

The fourth proportional to 28,228.52, 42,342.80 and 7,170.14 is: 10,755.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.52 : 42,342.80 = 7,170.14 : x
  2. Step 2: Convert to fraction form
    28,228.52/42,342.80 = 7,170.14/x
  3. Step 3: Cross multiply
    28,228.52x = 42,342.80 × 7,170.14
  4. Step 4: Simplify right side
    28,228.52x = 303,603,662.28
  5. Step 5: Solve for x
    x = 303,603,662.28/28,228.52
  6. Step 6: Final answer
    x = 10,755.21

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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.