Home / 19,360.70-29,020.50-12,318.56

Finding the Fourth Proportional to 19,360.70, 29,020.50 and 12,318.56

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Solution

The fourth proportional to 19,360.70, 29,020.50 and 12,318.56 is: 18,464.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,360.70 : 29,020.50 = 12,318.56 : x
  2. Step 2: Convert to fraction form
    19,360.70/29,020.50 = 12,318.56/x
  3. Step 3: Cross multiply
    19,360.70x = 29,020.50 × 12,318.56
  4. Step 4: Simplify right side
    19,360.70x = 357,490,770.48
  5. Step 5: Solve for x
    x = 357,490,770.48/19,360.70
  6. Step 6: Final answer
    x = 18,464.76

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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.