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Finding the Fourth Proportional to 21,653.36, 29,865.06 and 14,950.20

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Solution

The fourth proportional to 21,653.36, 29,865.06 and 14,950.20 is: 20,619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.36 : 29,865.06 = 14,950.20 : x
  2. Step 2: Convert to fraction form
    21,653.36/29,865.06 = 14,950.20/x
  3. Step 3: Cross multiply
    21,653.36x = 29,865.06 × 14,950.20
  4. Step 4: Simplify right side
    21,653.36x = 446,488,620.01
  5. Step 5: Solve for x
    x = 446,488,620.01/21,653.36
  6. Step 6: Final answer
    x = 20,619.84

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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.