Home / 11,687.90-17,534.88-6,139.60

Finding the Fourth Proportional to 11,687.90, 17,534.88 and 6,139.60

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Solution

The fourth proportional to 11,687.90, 17,534.88 and 6,139.60 is: 9,210.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.90 : 17,534.88 = 6,139.60 : x
  2. Step 2: Convert to fraction form
    11,687.90/17,534.88 = 6,139.60/x
  3. Step 3: Cross multiply
    11,687.90x = 17,534.88 × 6,139.60
  4. Step 4: Simplify right side
    11,687.90x = 107,657,105.41
  5. Step 5: Solve for x
    x = 107,657,105.41/11,687.90
  6. Step 6: Final answer
    x = 9,210.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.