Home / 12,232.40-16,879.88-6,643.28

Finding the Fourth Proportional to 12,232.40, 16,879.88 and 6,643.28

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Solution

The fourth proportional to 12,232.40, 16,879.88 and 6,643.28 is: 9,167.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,232.40 : 16,879.88 = 6,643.28 : x
  2. Step 2: Convert to fraction form
    12,232.40/16,879.88 = 6,643.28/x
  3. Step 3: Cross multiply
    12,232.40x = 16,879.88 × 6,643.28
  4. Step 4: Simplify right side
    12,232.40x = 112,137,769.21
  5. Step 5: Solve for x
    x = 112,137,769.21/12,232.40
  6. Step 6: Final answer
    x = 9,167.27

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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.