Home / 11,639.75-17,455.39-4,242.47

Finding the Fourth Proportional to 11,639.75, 17,455.39 and 4,242.47

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Solution

The fourth proportional to 11,639.75, 17,455.39 and 4,242.47 is: 6,362.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.75 : 17,455.39 = 4,242.47 : x
  2. Step 2: Convert to fraction form
    11,639.75/17,455.39 = 4,242.47/x
  3. Step 3: Cross multiply
    11,639.75x = 17,455.39 × 4,242.47
  4. Step 4: Simplify right side
    11,639.75x = 74,053,870.53
  5. Step 5: Solve for x
    x = 74,053,870.53/11,639.75
  6. Step 6: Final answer
    x = 6,362.16

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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.