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Finding the Fourth Proportional to 21,373.84, 29,494.74 and 11,940.58

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Solution

The fourth proportional to 21,373.84, 29,494.74 and 11,940.58 is: 16,477.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,373.84 : 29,494.74 = 11,940.58 : x
  2. Step 2: Convert to fraction form
    21,373.84/29,494.74 = 11,940.58/x
  3. Step 3: Cross multiply
    21,373.84x = 29,494.74 × 11,940.58
  4. Step 4: Simplify right side
    21,373.84x = 352,184,302.55
  5. Step 5: Solve for x
    x = 352,184,302.55/21,373.84
  6. Step 6: Final answer
    x = 16,477.35

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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.