Home / 28,063.72-42,108.54-12,491.56

Finding the Fourth Proportional to 28,063.72, 42,108.54 and 12,491.56

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Solution

The fourth proportional to 28,063.72, 42,108.54 and 12,491.56 is: 18,743.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063.72 : 42,108.54 = 12,491.56 : x
  2. Step 2: Convert to fraction form
    28,063.72/42,108.54 = 12,491.56/x
  3. Step 3: Cross multiply
    28,063.72x = 42,108.54 × 12,491.56
  4. Step 4: Simplify right side
    28,063.72x = 526,001,353.92
  5. Step 5: Solve for x
    x = 526,001,353.92/28,063.72
  6. Step 6: Final answer
    x = 18,743.11

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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.