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Finding the Fourth Proportional to 21,494.76, 29,663.30 and 12,064.04

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Solution

The fourth proportional to 21,494.76, 29,663.30 and 12,064.04 is: 16,648.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,494.76 : 29,663.30 = 12,064.04 : x
  2. Step 2: Convert to fraction form
    21,494.76/29,663.30 = 12,064.04/x
  3. Step 3: Cross multiply
    21,494.76x = 29,663.30 × 12,064.04
  4. Step 4: Simplify right side
    21,494.76x = 357,859,237.73
  5. Step 5: Solve for x
    x = 357,859,237.73/21,494.76
  6. Step 6: Final answer
    x = 16,648.67

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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.