Home / 11,665.23-16,089.80-7,187.55

Finding the Fourth Proportional to 11,665.23, 16,089.80 and 7,187.55

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Solution

The fourth proportional to 11,665.23, 16,089.80 and 7,187.55 is: 9,913.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,665.23 : 16,089.80 = 7,187.55 : x
  2. Step 2: Convert to fraction form
    11,665.23/16,089.80 = 7,187.55/x
  3. Step 3: Cross multiply
    11,665.23x = 16,089.80 × 7,187.55
  4. Step 4: Simplify right side
    11,665.23x = 115,646,241.99
  5. Step 5: Solve for x
    x = 115,646,241.99/11,665.23
  6. Step 6: Final answer
    x = 9,913.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.