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Finding the Fourth Proportional to 19,671.78, 29,522.36 and 11,340.67

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Solution

The fourth proportional to 19,671.78, 29,522.36 and 11,340.67 is: 17,019.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.78 : 29,522.36 = 11,340.67 : x
  2. Step 2: Convert to fraction form
    19,671.78/29,522.36 = 11,340.67/x
  3. Step 3: Cross multiply
    19,671.78x = 29,522.36 × 11,340.67
  4. Step 4: Simplify right side
    19,671.78x = 334,803,285.68
  5. Step 5: Solve for x
    x = 334,803,285.68/19,671.78
  6. Step 6: Final answer
    x = 17,019.48

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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.