Home / 28,666.24-42,995.68-7,891.36

Finding the Fourth Proportional to 28,666.24, 42,995.68 and 7,891.36

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Solution

The fourth proportional to 28,666.24, 42,995.68 and 7,891.36 is: 11,836.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666.24 : 42,995.68 = 7,891.36 : x
  2. Step 2: Convert to fraction form
    28,666.24/42,995.68 = 7,891.36/x
  3. Step 3: Cross multiply
    28,666.24x = 42,995.68 × 7,891.36
  4. Step 4: Simplify right side
    28,666.24x = 339,294,389.32
  5. Step 5: Solve for x
    x = 339,294,389.32/28,666.24
  6. Step 6: Final answer
    x = 11,836.03

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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.