Home / 28,489.83-42,670.50-13,709.81

Finding the Fourth Proportional to 28,489.83, 42,670.50 and 13,709.81

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Solution

The fourth proportional to 28,489.83, 42,670.50 and 13,709.81 is: 20,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.83 : 42,670.50 = 13,709.81 : x
  2. Step 2: Convert to fraction form
    28,489.83/42,670.50 = 13,709.81/x
  3. Step 3: Cross multiply
    28,489.83x = 42,670.50 × 13,709.81
  4. Step 4: Simplify right side
    28,489.83x = 585,004,262.85
  5. Step 5: Solve for x
    x = 585,004,262.85/28,489.83
  6. Step 6: Final answer
    x = 20,533.80

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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.