Home / 28,137.32-42,190.39-11,509.03

Finding the Fourth Proportional to 28,137.32, 42,190.39 and 11,509.03

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Solution

The fourth proportional to 28,137.32, 42,190.39 and 11,509.03 is: 17,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.32 : 42,190.39 = 11,509.03 : x
  2. Step 2: Convert to fraction form
    28,137.32/42,190.39 = 11,509.03/x
  3. Step 3: Cross multiply
    28,137.32x = 42,190.39 × 11,509.03
  4. Step 4: Simplify right side
    28,137.32x = 485,570,294.03
  5. Step 5: Solve for x
    x = 485,570,294.03/28,137.32
  6. Step 6: Final answer
    x = 17,257.16

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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.