Home / 18,913.33-28,361.79-6,430

Finding the Fourth Proportional to 18,913.33, 28,361.79 and 6,430

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Solution

The fourth proportional to 18,913.33, 28,361.79 and 6,430 is: 9,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.33 : 28,361.79 = 6,430 : x
  2. Step 2: Convert to fraction form
    18,913.33/28,361.79 = 6,430/x
  3. Step 3: Cross multiply
    18,913.33x = 28,361.79 × 6,430
  4. Step 4: Simplify right side
    18,913.33x = 182,366,277.55
  5. Step 5: Solve for x
    x = 182,366,277.55/18,913.33
  6. Step 6: Final answer
    x = 9,642.21

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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.