Home / 28,671.50-43,010.64-13,869.77

Finding the Fourth Proportional to 28,671.50, 43,010.64 and 13,869.77

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Solution

The fourth proportional to 28,671.50, 43,010.64 and 13,869.77 is: 20,806.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,671.50 : 43,010.64 = 13,869.77 : x
  2. Step 2: Convert to fraction form
    28,671.50/43,010.64 = 13,869.77/x
  3. Step 3: Cross multiply
    28,671.50x = 43,010.64 × 13,869.77
  4. Step 4: Simplify right side
    28,671.50x = 596,547,469.30
  5. Step 5: Solve for x
    x = 596,547,469.30/28,671.50
  6. Step 6: Final answer
    x = 20,806.29

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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.