Home / 28,929.98-43,379.38-13,126.40

Finding the Fourth Proportional to 28,929.98, 43,379.38 and 13,126.40

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Solution

The fourth proportional to 28,929.98, 43,379.38 and 13,126.40 is: 19,682.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,929.98 : 43,379.38 = 13,126.40 : x
  2. Step 2: Convert to fraction form
    28,929.98/43,379.38 = 13,126.40/x
  3. Step 3: Cross multiply
    28,929.98x = 43,379.38 × 13,126.40
  4. Step 4: Simplify right side
    28,929.98x = 569,414,843.92
  5. Step 5: Solve for x
    x = 569,414,843.92/28,929.98
  6. Step 6: Final answer
    x = 19,682.52

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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.