Home / 12,230.40-16,877.12-6,641.28

Finding the Fourth Proportional to 12,230.40, 16,877.12 and 6,641.28

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Solution

The fourth proportional to 12,230.40, 16,877.12 and 6,641.28 is: 9,164.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,230.40 : 16,877.12 = 6,641.28 : x
  2. Step 2: Convert to fraction form
    12,230.40/16,877.12 = 6,641.28/x
  3. Step 3: Cross multiply
    12,230.40x = 16,877.12 × 6,641.28
  4. Step 4: Simplify right side
    12,230.40x = 112,085,679.51
  5. Step 5: Solve for x
    x = 112,085,679.51/12,230.40
  6. Step 6: Final answer
    x = 9,164.51

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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.