Home / 19,975.20-29,930.40-12,566.40

Finding the Fourth Proportional to 19,975.20, 29,930.40 and 12,566.40

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Solution

The fourth proportional to 19,975.20, 29,930.40 and 12,566.40 is: 18,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,975.20 : 29,930.40 = 12,566.40 : x
  2. Step 2: Convert to fraction form
    19,975.20/29,930.40 = 12,566.40/x
  3. Step 3: Cross multiply
    19,975.20x = 29,930.40 × 12,566.40
  4. Step 4: Simplify right side
    19,975.20x = 376,117,378.56
  5. Step 5: Solve for x
    x = 376,117,378.56/19,975.20
  6. Step 6: Final answer
    x = 18,829.22

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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.