Home / 20,529.60-30,829.47-12,260.89

Finding the Fourth Proportional to 20,529.60, 30,829.47 and 12,260.89

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Solution

The fourth proportional to 20,529.60, 30,829.47 and 12,260.89 is: 18,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.60 : 30,829.47 = 12,260.89 : x
  2. Step 2: Convert to fraction form
    20,529.60/30,829.47 = 12,260.89/x
  3. Step 3: Cross multiply
    20,529.60x = 30,829.47 × 12,260.89
  4. Step 4: Simplify right side
    20,529.60x = 377,996,740.43
  5. Step 5: Solve for x
    x = 377,996,740.43/20,529.60
  6. Step 6: Final answer
    x = 18,412.28

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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.