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Finding the Fourth Proportional to 11,117.60, 16,676.40 and 10,042.40

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Solution

The fourth proportional to 11,117.60, 16,676.40 and 10,042.40 is: 15,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.60 : 16,676.40 = 10,042.40 : x
  2. Step 2: Convert to fraction form
    11,117.60/16,676.40 = 10,042.40/x
  3. Step 3: Cross multiply
    11,117.60x = 16,676.40 × 10,042.40
  4. Step 4: Simplify right side
    11,117.60x = 167,471,079.36
  5. Step 5: Solve for x
    x = 167,471,079.36/11,117.60
  6. Step 6: Final answer
    x = 15,063.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.