Home / 26,518.34-39,790.45-12,479.77

Finding the Fourth Proportional to 26,518.34, 39,790.45 and 12,479.77

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Solution

The fourth proportional to 26,518.34, 39,790.45 and 12,479.77 is: 18,725.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,518.34 : 39,790.45 = 12,479.77 : x
  2. Step 2: Convert to fraction form
    26,518.34/39,790.45 = 12,479.77/x
  3. Step 3: Cross multiply
    26,518.34x = 39,790.45 × 12,479.77
  4. Step 4: Simplify right side
    26,518.34x = 496,575,747.08
  5. Step 5: Solve for x
    x = 496,575,747.08/26,518.34
  6. Step 6: Final answer
    x = 18,725.75

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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.