Home / 11,619.31-16,037.18-7,146.90

Finding the Fourth Proportional to 11,619.31, 16,037.18 and 7,146.90

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Solution

The fourth proportional to 11,619.31, 16,037.18 and 7,146.90 is: 9,864.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,619.31 : 16,037.18 = 7,146.90 : x
  2. Step 2: Convert to fraction form
    11,619.31/16,037.18 = 7,146.90/x
  3. Step 3: Cross multiply
    11,619.31x = 16,037.18 × 7,146.90
  4. Step 4: Simplify right side
    11,619.31x = 114,616,121.74
  5. Step 5: Solve for x
    x = 114,616,121.74/11,619.31
  6. Step 6: Final answer
    x = 9,864.28

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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.