Home / 28,861.79-39,828.89-16,115.19

Finding the Fourth Proportional to 28,861.79, 39,828.89 and 16,115.19

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Solution

The fourth proportional to 28,861.79, 39,828.89 and 16,115.19 is: 22,238.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.79 : 39,828.89 = 16,115.19 : x
  2. Step 2: Convert to fraction form
    28,861.79/39,828.89 = 16,115.19/x
  3. Step 3: Cross multiply
    28,861.79x = 39,828.89 × 16,115.19
  4. Step 4: Simplify right side
    28,861.79x = 641,849,930.12
  5. Step 5: Solve for x
    x = 641,849,930.12/28,861.79
  6. Step 6: Final answer
    x = 22,238.74

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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.