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Finding the Fourth Proportional to 12,661.66, 17,465.79 and 7,622.38

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Solution

The fourth proportional to 12,661.66, 17,465.79 and 7,622.38 is: 10,514.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.66 : 17,465.79 = 7,622.38 : x
  2. Step 2: Convert to fraction form
    12,661.66/17,465.79 = 7,622.38/x
  3. Step 3: Cross multiply
    12,661.66x = 17,465.79 × 7,622.38
  4. Step 4: Simplify right side
    12,661.66x = 133,130,888.38
  5. Step 5: Solve for x
    x = 133,130,888.38/12,661.66
  6. Step 6: Final answer
    x = 10,514.49

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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.