Home / 28,515.13-42,777.83-9,790.34

Finding the Fourth Proportional to 28,515.13, 42,777.83 and 9,790.34

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Solution

The fourth proportional to 28,515.13, 42,777.83 and 9,790.34 is: 14,687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.13 : 42,777.83 = 9,790.34 : x
  2. Step 2: Convert to fraction form
    28,515.13/42,777.83 = 9,790.34/x
  3. Step 3: Cross multiply
    28,515.13x = 42,777.83 × 9,790.34
  4. Step 4: Simplify right side
    28,515.13x = 418,809,310.75
  5. Step 5: Solve for x
    x = 418,809,310.75/28,515.13
  6. Step 6: Final answer
    x = 14,687.27

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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.