Home / 20,527.05-30,789.16-12,630.84

Finding the Fourth Proportional to 20,527.05, 30,789.16 and 12,630.84

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Solution

The fourth proportional to 20,527.05, 30,789.16 and 12,630.84 is: 18,945.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,527.05 : 30,789.16 = 12,630.84 : x
  2. Step 2: Convert to fraction form
    20,527.05/30,789.16 = 12,630.84/x
  3. Step 3: Cross multiply
    20,527.05x = 30,789.16 × 12,630.84
  4. Step 4: Simplify right side
    20,527.05x = 388,892,877.71
  5. Step 5: Solve for x
    x = 388,892,877.71/20,527.05
  6. Step 6: Final answer
    x = 18,945.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.