Home / 28,001.08-42,007.77-20,583.05

Finding the Fourth Proportional to 28,001.08, 42,007.77 and 20,583.05

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Solution

The fourth proportional to 28,001.08, 42,007.77 and 20,583.05 is: 30,879.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.08 : 42,007.77 = 20,583.05 : x
  2. Step 2: Convert to fraction form
    28,001.08/42,007.77 = 20,583.05/x
  3. Step 3: Cross multiply
    28,001.08x = 42,007.77 × 20,583.05
  4. Step 4: Simplify right side
    28,001.08x = 864,647,927.38
  5. Step 5: Solve for x
    x = 864,647,927.38/28,001.08
  6. Step 6: Final answer
    x = 30,879.09

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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.