Home / 20,529.62-28,328.61-12,030.05

Finding the Fourth Proportional to 20,529.62, 28,328.61 and 12,030.05

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Solution

The fourth proportional to 20,529.62, 28,328.61 and 12,030.05 is: 16,600.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.62 : 28,328.61 = 12,030.05 : x
  2. Step 2: Convert to fraction form
    20,529.62/28,328.61 = 12,030.05/x
  3. Step 3: Cross multiply
    20,529.62x = 28,328.61 × 12,030.05
  4. Step 4: Simplify right side
    20,529.62x = 340,794,453.09
  5. Step 5: Solve for x
    x = 340,794,453.09/20,529.62
  6. Step 6: Final answer
    x = 16,600.14

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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.