Home / 20,839.47-28,771.88-18,597.50

Finding the Fourth Proportional to 20,839.47, 28,771.88 and 18,597.50

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Solution

The fourth proportional to 20,839.47, 28,771.88 and 18,597.50 is: 25,676.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.47 : 28,771.88 = 18,597.50 : x
  2. Step 2: Convert to fraction form
    20,839.47/28,771.88 = 18,597.50/x
  3. Step 3: Cross multiply
    20,839.47x = 28,771.88 × 18,597.50
  4. Step 4: Simplify right side
    20,839.47x = 535,084,894.44
  5. Step 5: Solve for x
    x = 535,084,894.44/20,839.47
  6. Step 6: Final answer
    x = 25,676.51

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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.