Home / 18,665.48-28,001.06-6,188.64

Finding the Fourth Proportional to 18,665.48, 28,001.06 and 6,188.64

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Solution

The fourth proportional to 18,665.48, 28,001.06 and 6,188.64 is: 9,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.48 : 28,001.06 = 6,188.64 : x
  2. Step 2: Convert to fraction form
    18,665.48/28,001.06 = 6,188.64/x
  3. Step 3: Cross multiply
    18,665.48x = 28,001.06 × 6,188.64
  4. Step 4: Simplify right side
    18,665.48x = 173,288,479.96
  5. Step 5: Solve for x
    x = 173,288,479.96/18,665.48
  6. Step 6: Final answer
    x = 9,283.90

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1.5x scale

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.