Home / 11,911.48-16,437.20-6,605.98

Finding the Fourth Proportional to 11,911.48, 16,437.20 and 6,605.98

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Solution

The fourth proportional to 11,911.48, 16,437.20 and 6,605.98 is: 9,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.48 : 16,437.20 = 6,605.98 : x
  2. Step 2: Convert to fraction form
    11,911.48/16,437.20 = 6,605.98/x
  3. Step 3: Cross multiply
    11,911.48x = 16,437.20 × 6,605.98
  4. Step 4: Simplify right side
    11,911.48x = 108,583,814.46
  5. Step 5: Solve for x
    x = 108,583,814.46/11,911.48
  6. Step 6: Final answer
    x = 9,115.90

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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.