Home / 28,613.85-42,920.16-7,837.35

Finding the Fourth Proportional to 28,613.85, 42,920.16 and 7,837.35

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Solution

The fourth proportional to 28,613.85, 42,920.16 and 7,837.35 is: 11,755.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.85 : 42,920.16 = 7,837.35 : x
  2. Step 2: Convert to fraction form
    28,613.85/42,920.16 = 7,837.35/x
  3. Step 3: Cross multiply
    28,613.85x = 42,920.16 × 7,837.35
  4. Step 4: Simplify right side
    28,613.85x = 336,380,315.98
  5. Step 5: Solve for x
    x = 336,380,315.98/28,613.85
  6. Step 6: Final answer
    x = 11,755.86

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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.