Home / 21,212.55-29,267.73-12,709.98

Finding the Fourth Proportional to 21,212.55, 29,267.73 and 12,709.98

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Solution

The fourth proportional to 21,212.55, 29,267.73 and 12,709.98 is: 17,536.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.55 : 29,267.73 = 12,709.98 : x
  2. Step 2: Convert to fraction form
    21,212.55/29,267.73 = 12,709.98/x
  3. Step 3: Cross multiply
    21,212.55x = 29,267.73 × 12,709.98
  4. Step 4: Simplify right side
    21,212.55x = 371,992,262.95
  5. Step 5: Solve for x
    x = 371,992,262.95/21,212.55
  6. Step 6: Final answer
    x = 17,536.42

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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.