Home / 11,720.98-16,170.95-6,681.57

Finding the Fourth Proportional to 11,720.98, 16,170.95 and 6,681.57

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Solution

The fourth proportional to 11,720.98, 16,170.95 and 6,681.57 is: 9,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.98 : 16,170.95 = 6,681.57 : x
  2. Step 2: Convert to fraction form
    11,720.98/16,170.95 = 6,681.57/x
  3. Step 3: Cross multiply
    11,720.98x = 16,170.95 × 6,681.57
  4. Step 4: Simplify right side
    11,720.98x = 108,047,252.87
  5. Step 5: Solve for x
    x = 108,047,252.87/11,720.98
  6. Step 6: Final answer
    x = 9,218.28

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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.