Home / 11,421.60-17,107.59-11,142.81

Finding the Fourth Proportional to 11,421.60, 17,107.59 and 11,142.81

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Solution

The fourth proportional to 11,421.60, 17,107.59 and 11,142.81 is: 16,690.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.60 : 17,107.59 = 11,142.81 : x
  2. Step 2: Convert to fraction form
    11,421.60/17,107.59 = 11,142.81/x
  3. Step 3: Cross multiply
    11,421.60x = 17,107.59 × 11,142.81
  4. Step 4: Simplify right side
    11,421.60x = 190,626,624.93
  5. Step 5: Solve for x
    x = 190,626,624.93/11,421.60
  6. Step 6: Final answer
    x = 16,690.01

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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.