Home / 28,219.80-42,336.74-19,916.02

Finding the Fourth Proportional to 28,219.80, 42,336.74 and 19,916.02

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Solution

The fourth proportional to 28,219.80, 42,336.74 and 19,916.02 is: 29,879.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.80 : 42,336.74 = 19,916.02 : x
  2. Step 2: Convert to fraction form
    28,219.80/42,336.74 = 19,916.02/x
  3. Step 3: Cross multiply
    28,219.80x = 42,336.74 × 19,916.02
  4. Step 4: Simplify right side
    28,219.80x = 843,179,360.57
  5. Step 5: Solve for x
    x = 843,179,360.57/28,219.80
  6. Step 6: Final answer
    x = 29,879.00

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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.