Home / 11,780.79-17,661.60-6,515.58

Finding the Fourth Proportional to 11,780.79, 17,661.60 and 6,515.58

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Solution

The fourth proportional to 11,780.79, 17,661.60 and 6,515.58 is: 9,768.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,780.79 : 17,661.60 = 6,515.58 : x
  2. Step 2: Convert to fraction form
    11,780.79/17,661.60 = 6,515.58/x
  3. Step 3: Cross multiply
    11,780.79x = 17,661.60 × 6,515.58
  4. Step 4: Simplify right side
    11,780.79x = 115,075,567.73
  5. Step 5: Solve for x
    x = 115,075,567.73/11,780.79
  6. Step 6: Final answer
    x = 9,768.07

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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.