Home / 21,267.11-29,347.35-12,313.98

Finding the Fourth Proportional to 21,267.11, 29,347.35 and 12,313.98

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Solution

The fourth proportional to 21,267.11, 29,347.35 and 12,313.98 is: 16,992.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.11 : 29,347.35 = 12,313.98 : x
  2. Step 2: Convert to fraction form
    21,267.11/29,347.35 = 12,313.98/x
  3. Step 3: Cross multiply
    21,267.11x = 29,347.35 × 12,313.98
  4. Step 4: Simplify right side
    21,267.11x = 361,382,680.95
  5. Step 5: Solve for x
    x = 361,382,680.95/21,267.11
  6. Step 6: Final answer
    x = 16,992.57

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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.