Home / 28,899.18-39,863.34-19,930.86

Finding the Fourth Proportional to 28,899.18, 39,863.34 and 19,930.86

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Solution

The fourth proportional to 28,899.18, 39,863.34 and 19,930.86 is: 27,492.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,899.18 : 39,863.34 = 19,930.86 : x
  2. Step 2: Convert to fraction form
    28,899.18/39,863.34 = 19,930.86/x
  3. Step 3: Cross multiply
    28,899.18x = 39,863.34 × 19,930.86
  4. Step 4: Simplify right side
    28,899.18x = 794,510,648.67
  5. Step 5: Solve for x
    x = 794,510,648.67/28,899.18
  6. Step 6: Final answer
    x = 27,492.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.