Home / 21,408.62-29,476.76-19,440.32

Finding the Fourth Proportional to 21,408.62, 29,476.76 and 19,440.32

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Solution

The fourth proportional to 21,408.62, 29,476.76 and 19,440.32 is: 26,766.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.62 : 29,476.76 = 19,440.32 : x
  2. Step 2: Convert to fraction form
    21,408.62/29,476.76 = 19,440.32/x
  3. Step 3: Cross multiply
    21,408.62x = 29,476.76 × 19,440.32
  4. Step 4: Simplify right side
    21,408.62x = 573,037,402.38
  5. Step 5: Solve for x
    x = 573,037,402.38/21,408.62
  6. Step 6: Final answer
    x = 26,766.67

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1.5x scale

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.