Home / 28,621.99-42,940.68-11,973.25

Finding the Fourth Proportional to 28,621.99, 42,940.68 and 11,973.25

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Solution

The fourth proportional to 28,621.99, 42,940.68 and 11,973.25 is: 17,963.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.99 : 42,940.68 = 11,973.25 : x
  2. Step 2: Convert to fraction form
    28,621.99/42,940.68 = 11,973.25/x
  3. Step 3: Cross multiply
    28,621.99x = 42,940.68 × 11,973.25
  4. Step 4: Simplify right side
    28,621.99x = 514,139,496.81
  5. Step 5: Solve for x
    x = 514,139,496.81/28,621.99
  6. Step 6: Final answer
    x = 17,963.09

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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.