Home / 20,513.91-28,318.65-12,014.85

Finding the Fourth Proportional to 20,513.91, 28,318.65 and 12,014.85

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Solution

The fourth proportional to 20,513.91, 28,318.65 and 12,014.85 is: 16,586.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.91 : 28,318.65 = 12,014.85 : x
  2. Step 2: Convert to fraction form
    20,513.91/28,318.65 = 12,014.85/x
  3. Step 3: Cross multiply
    20,513.91x = 28,318.65 × 12,014.85
  4. Step 4: Simplify right side
    20,513.91x = 340,244,271.88
  5. Step 5: Solve for x
    x = 340,244,271.88/20,513.91
  6. Step 6: Final answer
    x = 16,586.03

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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.