Home / 20,511.63-28,306.06-11,080.19

Finding the Fourth Proportional to 20,511.63, 28,306.06 and 11,080.19

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Solution

The fourth proportional to 20,511.63, 28,306.06 and 11,080.19 is: 15,290.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.63 : 28,306.06 = 11,080.19 : x
  2. Step 2: Convert to fraction form
    20,511.63/28,306.06 = 11,080.19/x
  3. Step 3: Cross multiply
    20,511.63x = 28,306.06 × 11,080.19
  4. Step 4: Simplify right side
    20,511.63x = 313,636,522.95
  5. Step 5: Solve for x
    x = 313,636,522.95/20,511.63
  6. Step 6: Final answer
    x = 15,290.67

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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.