Home / 21,487.80-29,651.68-11,926.94

Finding the Fourth Proportional to 21,487.80, 29,651.68 and 11,926.94

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Solution

The fourth proportional to 21,487.80, 29,651.68 and 11,926.94 is: 16,458.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.80 : 29,651.68 = 11,926.94 : x
  2. Step 2: Convert to fraction form
    21,487.80/29,651.68 = 11,926.94/x
  3. Step 3: Cross multiply
    21,487.80x = 29,651.68 × 11,926.94
  4. Step 4: Simplify right side
    21,487.80x = 353,653,630.18
  5. Step 5: Solve for x
    x = 353,653,630.18/21,487.80
  6. Step 6: Final answer
    x = 16,458.35

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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.