Home / 20,497.31-30,686.83-12,038.18

Finding the Fourth Proportional to 20,497.31, 30,686.83 and 12,038.18

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Solution

The fourth proportional to 20,497.31, 30,686.83 and 12,038.18 is: 18,022.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.31 : 30,686.83 = 12,038.18 : x
  2. Step 2: Convert to fraction form
    20,497.31/30,686.83 = 12,038.18/x
  3. Step 3: Cross multiply
    20,497.31x = 30,686.83 × 12,038.18
  4. Step 4: Simplify right side
    20,497.31x = 369,413,583.17
  5. Step 5: Solve for x
    x = 369,413,583.17/20,497.31
  6. Step 6: Final answer
    x = 18,022.54

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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.