Home / 11,681.85-16,121.48-6,646.98

Finding the Fourth Proportional to 11,681.85, 16,121.48 and 6,646.98

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Solution

The fourth proportional to 11,681.85, 16,121.48 and 6,646.98 is: 9,173.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.85 : 16,121.48 = 6,646.98 : x
  2. Step 2: Convert to fraction form
    11,681.85/16,121.48 = 6,646.98/x
  3. Step 3: Cross multiply
    11,681.85x = 16,121.48 × 6,646.98
  4. Step 4: Simplify right side
    11,681.85x = 107,159,121.90
  5. Step 5: Solve for x
    x = 107,159,121.90/11,681.85
  6. Step 6: Final answer
    x = 9,173.13

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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.