Home / 18,730.34-28,095.40-7,636.98

Finding the Fourth Proportional to 18,730.34, 28,095.40 and 7,636.98

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Solution

The fourth proportional to 18,730.34, 28,095.40 and 7,636.98 is: 11,455.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.34 : 28,095.40 = 7,636.98 : x
  2. Step 2: Convert to fraction form
    18,730.34/28,095.40 = 7,636.98/x
  3. Step 3: Cross multiply
    18,730.34x = 28,095.40 × 7,636.98
  4. Step 4: Simplify right side
    18,730.34x = 214,564,007.89
  5. Step 5: Solve for x
    x = 214,564,007.89/18,730.34
  6. Step 6: Final answer
    x = 11,455.43

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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.