Home / 28,511.22-42,769.11-9,783.72

Finding the Fourth Proportional to 28,511.22, 42,769.11 and 9,783.72

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Solution

The fourth proportional to 28,511.22, 42,769.11 and 9,783.72 is: 14,676.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.22 : 42,769.11 = 9,783.72 : x
  2. Step 2: Convert to fraction form
    28,511.22/42,769.11 = 9,783.72/x
  3. Step 3: Cross multiply
    28,511.22x = 42,769.11 × 9,783.72
  4. Step 4: Simplify right side
    28,511.22x = 418,440,996.89
  5. Step 5: Solve for x
    x = 418,440,996.89/28,511.22
  6. Step 6: Final answer
    x = 14,676.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.