Home / 11,780.08-17,669.64-3,988.88

Finding the Fourth Proportional to 11,780.08, 17,669.64 and 3,988.88

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Solution

The fourth proportional to 11,780.08, 17,669.64 and 3,988.88 is: 5,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,780.08 : 17,669.64 = 3,988.88 : x
  2. Step 2: Convert to fraction form
    11,780.08/17,669.64 = 3,988.88/x
  3. Step 3: Cross multiply
    11,780.08x = 17,669.64 × 3,988.88
  4. Step 4: Simplify right side
    11,780.08x = 70,482,073.60
  5. Step 5: Solve for x
    x = 70,482,073.60/11,780.08
  6. Step 6: Final answer
    x = 5,983.16

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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.