Home / 43,490.61-65,226.15-21,281.67

Finding the Fourth Proportional to 43,490.61, 65,226.15 and 21,281.67

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Solution

The fourth proportional to 43,490.61, 65,226.15 and 21,281.67 is: 31,917.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,490.61 : 65,226.15 = 21,281.67 : x
  2. Step 2: Convert to fraction form
    43,490.61/65,226.15 = 21,281.67/x
  3. Step 3: Cross multiply
    43,490.61x = 65,226.15 × 21,281.67
  4. Step 4: Simplify right side
    43,490.61x = 1,388,121,399.67
  5. Step 5: Solve for x
    x = 1,388,121,399.67/43,490.61
  6. Step 6: Final answer
    x = 31,917.73

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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.