Home / 30,078.02-45,091.67-18,960.21

Finding the Fourth Proportional to 30,078.02, 45,091.67 and 18,960.21

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Solution

The fourth proportional to 30,078.02, 45,091.67 and 18,960.21 is: 28,424.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,078.02 : 45,091.67 = 18,960.21 : x
  2. Step 2: Convert to fraction form
    30,078.02/45,091.67 = 18,960.21/x
  3. Step 3: Cross multiply
    30,078.02x = 45,091.67 × 18,960.21
  4. Step 4: Simplify right side
    30,078.02x = 854,947,437.65
  5. Step 5: Solve for x
    x = 854,947,437.65/30,078.02
  6. Step 6: Final answer
    x = 28,424.32

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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.