Home / 20,730.60-28,608.12-11,299.08

Finding the Fourth Proportional to 20,730.60, 28,608.12 and 11,299.08

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Solution

The fourth proportional to 20,730.60, 28,608.12 and 11,299.08 is: 15,592.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.60 : 28,608.12 = 11,299.08 : x
  2. Step 2: Convert to fraction form
    20,730.60/28,608.12 = 11,299.08/x
  3. Step 3: Cross multiply
    20,730.60x = 28,608.12 × 11,299.08
  4. Step 4: Simplify right side
    20,730.60x = 323,245,436.53
  5. Step 5: Solve for x
    x = 323,245,436.53/20,730.60
  6. Step 6: Final answer
    x = 15,592.67

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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.