Home / 20,907.76-28,852.60-11,476.12

Finding the Fourth Proportional to 20,907.76, 28,852.60 and 11,476.12

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Solution

The fourth proportional to 20,907.76, 28,852.60 and 11,476.12 is: 15,836.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.76 : 28,852.60 = 11,476.12 : x
  2. Step 2: Convert to fraction form
    20,907.76/28,852.60 = 11,476.12/x
  3. Step 3: Cross multiply
    20,907.76x = 28,852.60 × 11,476.12
  4. Step 4: Simplify right side
    20,907.76x = 331,115,899.91
  5. Step 5: Solve for x
    x = 331,115,899.91/20,907.76
  6. Step 6: Final answer
    x = 15,836.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.