Home / 20,630.98-28,470.75-11,199.52

Finding the Fourth Proportional to 20,630.98, 28,470.75 and 11,199.52

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Solution

The fourth proportional to 20,630.98, 28,470.75 and 11,199.52 is: 15,455.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.98 : 28,470.75 = 11,199.52 : x
  2. Step 2: Convert to fraction form
    20,630.98/28,470.75 = 11,199.52/x
  3. Step 3: Cross multiply
    20,630.98x = 28,470.75 × 11,199.52
  4. Step 4: Simplify right side
    20,630.98x = 318,858,734.04
  5. Step 5: Solve for x
    x = 318,858,734.04/20,630.98
  6. Step 6: Final answer
    x = 15,455.34

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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.