Home / 20,951.47-28,903.41-18,563.89

Finding the Fourth Proportional to 20,951.47, 28,903.41 and 18,563.89

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Solution

The fourth proportional to 20,951.47, 28,903.41 and 18,563.89 is: 25,609.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951.47 : 28,903.41 = 18,563.89 : x
  2. Step 2: Convert to fraction form
    20,951.47/28,903.41 = 18,563.89/x
  3. Step 3: Cross multiply
    20,951.47x = 28,903.41 × 18,563.89
  4. Step 4: Simplify right side
    20,951.47x = 536,559,723.86
  5. Step 5: Solve for x
    x = 536,559,723.86/20,951.47
  6. Step 6: Final answer
    x = 25,609.65

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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.