Home / 18,959.04-28,418.54-7,105.07

Finding the Fourth Proportional to 18,959.04, 28,418.54 and 7,105.07

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Solution

The fourth proportional to 18,959.04, 28,418.54 and 7,105.07 is: 10,650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959.04 : 28,418.54 = 7,105.07 : x
  2. Step 2: Convert to fraction form
    18,959.04/28,418.54 = 7,105.07/x
  3. Step 3: Cross multiply
    18,959.04x = 28,418.54 × 7,105.07
  4. Step 4: Simplify right side
    18,959.04x = 201,915,538.38
  5. Step 5: Solve for x
    x = 201,915,538.38/18,959.04
  6. Step 6: Final answer
    x = 10,650.09

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1.5x scale

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.