Home / 11,135.40-16,678.80-9,904.20

Finding the Fourth Proportional to 11,135.40, 16,678.80 and 9,904.20

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Solution

The fourth proportional to 11,135.40, 16,678.80 and 9,904.20 is: 14,834.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.40 : 16,678.80 = 9,904.20 : x
  2. Step 2: Convert to fraction form
    11,135.40/16,678.80 = 9,904.20/x
  3. Step 3: Cross multiply
    11,135.40x = 16,678.80 × 9,904.20
  4. Step 4: Simplify right side
    11,135.40x = 165,190,170.96
  5. Step 5: Solve for x
    x = 165,190,170.96/11,135.40
  6. Step 6: Final answer
    x = 14,834.69

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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.