Home / 18,830.21-28,225.58-6,345.90

Finding the Fourth Proportional to 18,830.21, 28,225.58 and 6,345.90

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Solution

The fourth proportional to 18,830.21, 28,225.58 and 6,345.90 is: 9,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.21 : 28,225.58 = 6,345.90 : x
  2. Step 2: Convert to fraction form
    18,830.21/28,225.58 = 6,345.90/x
  3. Step 3: Cross multiply
    18,830.21x = 28,225.58 × 6,345.90
  4. Step 4: Simplify right side
    18,830.21x = 179,116,676.39
  5. Step 5: Solve for x
    x = 179,116,676.39/18,830.21
  6. Step 6: Final answer
    x = 9,512.20

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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.