Home / 12,320.28-18,483.30-4,000.32

Finding the Fourth Proportional to 12,320.28, 18,483.30 and 4,000.32

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Solution

The fourth proportional to 12,320.28, 18,483.30 and 4,000.32 is: 6,001.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.28 : 18,483.30 = 4,000.32 : x
  2. Step 2: Convert to fraction form
    12,320.28/18,483.30 = 4,000.32/x
  3. Step 3: Cross multiply
    12,320.28x = 18,483.30 × 4,000.32
  4. Step 4: Simplify right side
    12,320.28x = 73,939,114.66
  5. Step 5: Solve for x
    x = 73,939,114.66/12,320.28
  6. Step 6: Final answer
    x = 6,001.42

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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.