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Finding the Fourth Proportional to 11,857.80, 17,775.63 and 5,931.03

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Solution

The fourth proportional to 11,857.80, 17,775.63 and 5,931.03 is: 8,891.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,857.80 : 17,775.63 = 5,931.03 : x
  2. Step 2: Convert to fraction form
    11,857.80/17,775.63 = 5,931.03/x
  3. Step 3: Cross multiply
    11,857.80x = 17,775.63 × 5,931.03
  4. Step 4: Simplify right side
    11,857.80x = 105,427,794.80
  5. Step 5: Solve for x
    x = 105,427,794.80/11,857.80
  6. Step 6: Final answer
    x = 8,891.01

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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.