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Finding the Fourth Proportional to 10,666.82, 15,965.37 and 9,643.71

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Solution

The fourth proportional to 10,666.82, 15,965.37 and 9,643.71 is: 14,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.82 : 15,965.37 = 9,643.71 : x
  2. Step 2: Convert to fraction form
    10,666.82/15,965.37 = 9,643.71/x
  3. Step 3: Cross multiply
    10,666.82x = 15,965.37 × 9,643.71
  4. Step 4: Simplify right side
    10,666.82x = 153,965,350.10
  5. Step 5: Solve for x
    x = 153,965,350.10/10,666.82
  6. Step 6: Final answer
    x = 14,434.05

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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.