Home / 21,385.46-29,513.50-11,953.42

Finding the Fourth Proportional to 21,385.46, 29,513.50 and 11,953.42

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Solution

The fourth proportional to 21,385.46, 29,513.50 and 11,953.42 is: 16,496.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.46 : 29,513.50 = 11,953.42 : x
  2. Step 2: Convert to fraction form
    21,385.46/29,513.50 = 11,953.42/x
  3. Step 3: Cross multiply
    21,385.46x = 29,513.50 × 11,953.42
  4. Step 4: Simplify right side
    21,385.46x = 352,787,261.17
  5. Step 5: Solve for x
    x = 352,787,261.17/21,385.46
  6. Step 6: Final answer
    x = 16,496.59

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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.