Home / 15,678.42-21,635.49-8,604.96

Finding the Fourth Proportional to 15,678.42, 21,635.49 and 8,604.96

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Solution

The fourth proportional to 15,678.42, 21,635.49 and 8,604.96 is: 11,874.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.42 : 21,635.49 = 8,604.96 : x
  2. Step 2: Convert to fraction form
    15,678.42/21,635.49 = 8,604.96/x
  3. Step 3: Cross multiply
    15,678.42x = 21,635.49 × 8,604.96
  4. Step 4: Simplify right side
    15,678.42x = 186,172,526.03
  5. Step 5: Solve for x
    x = 186,172,526.03/15,678.42
  6. Step 6: Final answer
    x = 11,874.44

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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.