Home / 11,355.39-17,011.62-6,428.57

Finding the Fourth Proportional to 11,355.39, 17,011.62 and 6,428.57

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Solution

The fourth proportional to 11,355.39, 17,011.62 and 6,428.57 is: 9,630.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.39 : 17,011.62 = 6,428.57 : x
  2. Step 2: Convert to fraction form
    11,355.39/17,011.62 = 6,428.57/x
  3. Step 3: Cross multiply
    11,355.39x = 17,011.62 × 6,428.57
  4. Step 4: Simplify right side
    11,355.39x = 109,360,304.93
  5. Step 5: Solve for x
    x = 109,360,304.93/11,355.39
  6. Step 6: Final answer
    x = 9,630.70

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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.