Home / 12,187.92-16,818.40-6,883.28

Finding the Fourth Proportional to 12,187.92, 16,818.40 and 6,883.28

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Solution

The fourth proportional to 12,187.92, 16,818.40 and 6,883.28 is: 9,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.92 : 16,818.40 = 6,883.28 : x
  2. Step 2: Convert to fraction form
    12,187.92/16,818.40 = 6,883.28/x
  3. Step 3: Cross multiply
    12,187.92x = 16,818.40 × 6,883.28
  4. Step 4: Simplify right side
    12,187.92x = 115,765,756.35
  5. Step 5: Solve for x
    x = 115,765,756.35/12,187.92
  6. Step 6: Final answer
    x = 9,498.40

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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.