Home / 11,694.98-16,139.44-7,218.92

Finding the Fourth Proportional to 11,694.98, 16,139.44 and 7,218.92

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Solution

The fourth proportional to 11,694.98, 16,139.44 and 7,218.92 is: 9,962.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,694.98 : 16,139.44 = 7,218.92 : x
  2. Step 2: Convert to fraction form
    11,694.98/16,139.44 = 7,218.92/x
  3. Step 3: Cross multiply
    11,694.98x = 16,139.44 × 7,218.92
  4. Step 4: Simplify right side
    11,694.98x = 116,509,326.20
  5. Step 5: Solve for x
    x = 116,509,326.20/11,694.98
  6. Step 6: Final answer
    x = 9,962.34

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Half scale
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Double scale
Find fourth proportional to 11,695.98, 16,140.82 and 7,219.92
Similar ratio
Find fourth proportional to 17,542.47, 24,209.16 and 10,828.38
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.