Home / 21,358.55-29,473.85-11,926.91

Finding the Fourth Proportional to 21,358.55, 29,473.85 and 11,926.91

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Solution

The fourth proportional to 21,358.55, 29,473.85 and 11,926.91 is: 16,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.55 : 29,473.85 = 11,926.91 : x
  2. Step 2: Convert to fraction form
    21,358.55/29,473.85 = 11,926.91/x
  3. Step 3: Cross multiply
    21,358.55x = 29,473.85 × 11,926.91
  4. Step 4: Simplify right side
    21,358.55x = 351,531,838.75
  5. Step 5: Solve for x
    x = 351,531,838.75/21,358.55
  6. Step 6: Final answer
    x = 16,458.60

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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.