Home / 21,263.46-29,342.97-12,311.11

Finding the Fourth Proportional to 21,263.46, 29,342.97 and 12,311.11

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Solution

The fourth proportional to 21,263.46, 29,342.97 and 12,311.11 is: 16,988.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.46 : 29,342.97 = 12,311.11 : x
  2. Step 2: Convert to fraction form
    21,263.46/29,342.97 = 12,311.11/x
  3. Step 3: Cross multiply
    21,263.46x = 29,342.97 × 12,311.11
  4. Step 4: Simplify right side
    21,263.46x = 361,244,531.40
  5. Step 5: Solve for x
    x = 361,244,531.40/21,263.46
  6. Step 6: Final answer
    x = 16,988.98

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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.