Home / 20,461.41-28,234.78-12,511.67

Finding the Fourth Proportional to 20,461.41, 28,234.78 and 12,511.67

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Solution

The fourth proportional to 20,461.41, 28,234.78 and 12,511.67 is: 17,264.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.41 : 28,234.78 = 12,511.67 : x
  2. Step 2: Convert to fraction form
    20,461.41/28,234.78 = 12,511.67/x
  3. Step 3: Cross multiply
    20,461.41x = 28,234.78 × 12,511.67
  4. Step 4: Simplify right side
    20,461.41x = 353,264,077.43
  5. Step 5: Solve for x
    x = 353,264,077.43/20,461.41
  6. Step 6: Final answer
    x = 17,264.89

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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.