Home / 43,310.19-64,991.20-18,686.19

Finding the Fourth Proportional to 43,310.19, 64,991.20 and 18,686.19

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Solution

The fourth proportional to 43,310.19, 64,991.20 and 18,686.19 is: 28,040.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,310.19 : 64,991.20 = 18,686.19 : x
  2. Step 2: Convert to fraction form
    43,310.19/64,991.20 = 18,686.19/x
  3. Step 3: Cross multiply
    43,310.19x = 64,991.20 × 18,686.19
  4. Step 4: Simplify right side
    43,310.19x = 1,214,437,911.53
  5. Step 5: Solve for x
    x = 1,214,437,911.53/43,310.19
  6. Step 6: Final answer
    x = 28,040.47

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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.