Home / 43,019.60-64,530.48-20,828.84

Finding the Fourth Proportional to 43,019.60, 64,530.48 and 20,828.84

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Solution

The fourth proportional to 43,019.60, 64,530.48 and 20,828.84 is: 31,243.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,019.60 : 64,530.48 = 20,828.84 : x
  2. Step 2: Convert to fraction form
    43,019.60/64,530.48 = 20,828.84/x
  3. Step 3: Cross multiply
    43,019.60x = 64,530.48 × 20,828.84
  4. Step 4: Simplify right side
    43,019.60x = 1,344,095,043.04
  5. Step 5: Solve for x
    x = 1,344,095,043.04/43,019.60
  6. Step 6: Final answer
    x = 31,243.78

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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.