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Finding the Fourth Proportional to 12,774.76, 19,156.07 and 4,453.76

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Solution

The fourth proportional to 12,774.76, 19,156.07 and 4,453.76 is: 6,678.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774.76 : 19,156.07 = 4,453.76 : x
  2. Step 2: Convert to fraction form
    12,774.76/19,156.07 = 4,453.76/x
  3. Step 3: Cross multiply
    12,774.76x = 19,156.07 × 4,453.76
  4. Step 4: Simplify right side
    12,774.76x = 85,316,530.95
  5. Step 5: Solve for x
    x = 85,316,530.95/12,774.76
  6. Step 6: Final answer
    x = 6,678.52

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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.