Home / 17,639.89-26,466.71-7,772.21

Finding the Fourth Proportional to 17,639.89, 26,466.71 and 7,772.21

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Solution

The fourth proportional to 17,639.89, 26,466.71 and 7,772.21 is: 11,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,639.89 : 26,466.71 = 7,772.21 : x
  2. Step 2: Convert to fraction form
    17,639.89/26,466.71 = 7,772.21/x
  3. Step 3: Cross multiply
    17,639.89x = 26,466.71 × 7,772.21
  4. Step 4: Simplify right side
    17,639.89x = 205,704,913.73
  5. Step 5: Solve for x
    x = 205,704,913.73/17,639.89
  6. Step 6: Final answer
    x = 11,661.35

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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.