Home / 20,907.05-31,333.23-18,122.27

Finding the Fourth Proportional to 20,907.05, 31,333.23 and 18,122.27

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Solution

The fourth proportional to 20,907.05, 31,333.23 and 18,122.27 is: 27,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.05 : 31,333.23 = 18,122.27 : x
  2. Step 2: Convert to fraction form
    20,907.05/31,333.23 = 18,122.27/x
  3. Step 3: Cross multiply
    20,907.05x = 31,333.23 × 18,122.27
  4. Step 4: Simplify right side
    20,907.05x = 567,829,097.37
  5. Step 5: Solve for x
    x = 567,829,097.37/20,907.05
  6. Step 6: Final answer
    x = 27,159.70

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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.