Home / 20,767.52-31,128.06-10,907.84

Finding the Fourth Proportional to 20,767.52, 31,128.06 and 10,907.84

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Solution

The fourth proportional to 20,767.52, 31,128.06 and 10,907.84 is: 16,349.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.52 : 31,128.06 = 10,907.84 : x
  2. Step 2: Convert to fraction form
    20,767.52/31,128.06 = 10,907.84/x
  3. Step 3: Cross multiply
    20,767.52x = 31,128.06 × 10,907.84
  4. Step 4: Simplify right side
    20,767.52x = 339,539,897.99
  5. Step 5: Solve for x
    x = 339,539,897.99/20,767.52
  6. Step 6: Final answer
    x = 16,349.56

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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.