Home / 28,328.49-42,470.06-18,977.85

Finding the Fourth Proportional to 28,328.49, 42,470.06 and 18,977.85

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Solution

The fourth proportional to 28,328.49, 42,470.06 and 18,977.85 is: 28,451.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.49 : 42,470.06 = 18,977.85 : x
  2. Step 2: Convert to fraction form
    28,328.49/42,470.06 = 18,977.85/x
  3. Step 3: Cross multiply
    28,328.49x = 42,470.06 × 18,977.85
  4. Step 4: Simplify right side
    28,328.49x = 805,990,333.28
  5. Step 5: Solve for x
    x = 805,990,333.28/28,328.49
  6. Step 6: Final answer
    x = 28,451.58

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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.