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Finding the Fourth Proportional to 11,666.18, 17,509.79 and 7,908.87

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Solution

The fourth proportional to 11,666.18, 17,509.79 and 7,908.87 is: 11,870.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,666.18 : 17,509.79 = 7,908.87 : x
  2. Step 2: Convert to fraction form
    11,666.18/17,509.79 = 7,908.87/x
  3. Step 3: Cross multiply
    11,666.18x = 17,509.79 × 7,908.87
  4. Step 4: Simplify right side
    11,666.18x = 138,482,628.83
  5. Step 5: Solve for x
    x = 138,482,628.83/11,666.18
  6. Step 6: Final answer
    x = 11,870.43

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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.