Home / 43,390.40-65,072.52-18,430.28

Finding the Fourth Proportional to 43,390.40, 65,072.52 and 18,430.28

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Solution

The fourth proportional to 43,390.40, 65,072.52 and 18,430.28 is: 27,639.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,390.40 : 65,072.52 = 18,430.28 : x
  2. Step 2: Convert to fraction form
    43,390.40/65,072.52 = 18,430.28/x
  3. Step 3: Cross multiply
    43,390.40x = 65,072.52 × 18,430.28
  4. Step 4: Simplify right side
    43,390.40x = 1,199,304,763.91
  5. Step 5: Solve for x
    x = 1,199,304,763.91/43,390.40
  6. Step 6: Final answer
    x = 27,639.86

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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.