Home / 18,903.43-28,356.45-6,418.36

Finding the Fourth Proportional to 18,903.43, 28,356.45 and 6,418.36

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Solution

The fourth proportional to 18,903.43, 28,356.45 and 6,418.36 is: 9,627.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903.43 : 28,356.45 = 6,418.36 : x
  2. Step 2: Convert to fraction form
    18,903.43/28,356.45 = 6,418.36/x
  3. Step 3: Cross multiply
    18,903.43x = 28,356.45 × 6,418.36
  4. Step 4: Simplify right side
    18,903.43x = 182,001,904.42
  5. Step 5: Solve for x
    x = 182,001,904.42/18,903.43
  6. Step 6: Final answer
    x = 9,627.98

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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.