Home / 26,613.72-39,920.96-12,759.48

Finding the Fourth Proportional to 26,613.72, 39,920.96 and 12,759.48

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Solution

The fourth proportional to 26,613.72, 39,920.96 and 12,759.48 is: 19,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,613.72 : 39,920.96 = 12,759.48 : x
  2. Step 2: Convert to fraction form
    26,613.72/39,920.96 = 12,759.48/x
  3. Step 3: Cross multiply
    26,613.72x = 39,920.96 × 12,759.48
  4. Step 4: Simplify right side
    26,613.72x = 509,370,690.70
  5. Step 5: Solve for x
    x = 509,370,690.70/26,613.72
  6. Step 6: Final answer
    x = 19,139.40

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1.5x scale

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.