Home / 28,536.05-42,808.68-8,809.99

Finding the Fourth Proportional to 28,536.05, 42,808.68 and 8,809.99

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Solution

The fourth proportional to 28,536.05, 42,808.68 and 8,809.99 is: 13,216.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536.05 : 42,808.68 = 8,809.99 : x
  2. Step 2: Convert to fraction form
    28,536.05/42,808.68 = 8,809.99/x
  3. Step 3: Cross multiply
    28,536.05x = 42,808.68 × 8,809.99
  4. Step 4: Simplify right side
    28,536.05x = 377,143,935.69
  5. Step 5: Solve for x
    x = 377,143,935.69/28,536.05
  6. Step 6: Final answer
    x = 13,216.40

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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.