Home / 20,454.76-28,228.26-12,071.08

Finding the Fourth Proportional to 20,454.76, 28,228.26 and 12,071.08

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Solution

The fourth proportional to 20,454.76, 28,228.26 and 12,071.08 is: 16,658.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.76 : 28,228.26 = 12,071.08 : x
  2. Step 2: Convert to fraction form
    20,454.76/28,228.26 = 12,071.08/x
  3. Step 3: Cross multiply
    20,454.76x = 28,228.26 × 12,071.08
  4. Step 4: Simplify right side
    20,454.76x = 340,745,584.72
  5. Step 5: Solve for x
    x = 340,745,584.72/20,454.76
  6. Step 6: Final answer
    x = 16,658.50

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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.