Home / 20,760.03-28,640.12-14,476.05

Finding the Fourth Proportional to 20,760.03, 28,640.12 and 14,476.05

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Solution

The fourth proportional to 20,760.03, 28,640.12 and 14,476.05 is: 19,970.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.03 : 28,640.12 = 14,476.05 : x
  2. Step 2: Convert to fraction form
    20,760.03/28,640.12 = 14,476.05/x
  3. Step 3: Cross multiply
    20,760.03x = 28,640.12 × 14,476.05
  4. Step 4: Simplify right side
    20,760.03x = 414,595,736.75
  5. Step 5: Solve for x
    x = 414,595,736.75/20,760.03
  6. Step 6: Final answer
    x = 19,970.86

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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.