Home / 28,020.77-38,671.38-20,934.89

Finding the Fourth Proportional to 28,020.77, 38,671.38 and 20,934.89

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Solution

The fourth proportional to 28,020.77, 38,671.38 and 20,934.89 is: 28,892.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.77 : 38,671.38 = 20,934.89 : x
  2. Step 2: Convert to fraction form
    28,020.77/38,671.38 = 20,934.89/x
  3. Step 3: Cross multiply
    28,020.77x = 38,671.38 × 20,934.89
  4. Step 4: Simplify right side
    28,020.77x = 809,580,893.09
  5. Step 5: Solve for x
    x = 809,580,893.09/28,020.77
  6. Step 6: Final answer
    x = 28,892.18

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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.