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Finding the Fourth Proportional to 21,700.56, 29,946.76 and 11,764.56

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Solution

The fourth proportional to 21,700.56, 29,946.76 and 11,764.56 is: 16,235.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.56 : 29,946.76 = 11,764.56 : x
  2. Step 2: Convert to fraction form
    21,700.56/29,946.76 = 11,764.56/x
  3. Step 3: Cross multiply
    21,700.56x = 29,946.76 × 11,764.56
  4. Step 4: Simplify right side
    21,700.56x = 352,310,454.83
  5. Step 5: Solve for x
    x = 352,310,454.83/21,700.56
  6. Step 6: Final answer
    x = 16,235.09

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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.