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Finding the Fourth Proportional to 18,807.58, 28,211.10 and 6,330.34

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Solution

The fourth proportional to 18,807.58, 28,211.10 and 6,330.34 is: 9,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.58 : 28,211.10 = 6,330.34 : x
  2. Step 2: Convert to fraction form
    18,807.58/28,211.10 = 6,330.34/x
  3. Step 3: Cross multiply
    18,807.58x = 28,211.10 × 6,330.34
  4. Step 4: Simplify right side
    18,807.58x = 178,585,854.77
  5. Step 5: Solve for x
    x = 178,585,854.77/18,807.58
  6. Step 6: Final answer
    x = 9,495.42

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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.