Home / 28,001.58-42,008.52-20,583.55

Finding the Fourth Proportional to 28,001.58, 42,008.52 and 20,583.55

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Solution

The fourth proportional to 28,001.58, 42,008.52 and 20,583.55 is: 30,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.58 : 42,008.52 = 20,583.55 : x
  2. Step 2: Convert to fraction form
    28,001.58/42,008.52 = 20,583.55/x
  3. Step 3: Cross multiply
    28,001.58x = 42,008.52 × 20,583.55
  4. Step 4: Simplify right side
    28,001.58x = 864,684,471.85
  5. Step 5: Solve for x
    x = 864,684,471.85/28,001.58
  6. Step 6: Final answer
    x = 30,879.85

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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.