Home / 11,905.53-16,426.30-9,379.80

Finding the Fourth Proportional to 11,905.53, 16,426.30 and 9,379.80

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Solution

The fourth proportional to 11,905.53, 16,426.30 and 9,379.80 is: 12,941.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.53 : 16,426.30 = 9,379.80 : x
  2. Step 2: Convert to fraction form
    11,905.53/16,426.30 = 9,379.80/x
  3. Step 3: Cross multiply
    11,905.53x = 16,426.30 × 9,379.80
  4. Step 4: Simplify right side
    11,905.53x = 154,075,326.61
  5. Step 5: Solve for x
    x = 154,075,326.61/11,905.53
  6. Step 6: Final answer
    x = 12,941.50

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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.