Home / 20,529.11-28,327.93-12,029.54

Finding the Fourth Proportional to 20,529.11, 28,327.93 and 12,029.54

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Solution

The fourth proportional to 20,529.11, 28,327.93 and 12,029.54 is: 16,599.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.11 : 28,327.93 = 12,029.54 : x
  2. Step 2: Convert to fraction form
    20,529.11/28,327.93 = 12,029.54/x
  3. Step 3: Cross multiply
    20,529.11x = 28,327.93 × 12,029.54
  4. Step 4: Simplify right side
    20,529.11x = 340,771,967.05
  5. Step 5: Solve for x
    x = 340,771,967.05/20,529.11
  6. Step 6: Final answer
    x = 16,599.45

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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.