Home / 12,810.32-17,677.62-7,145.66

Finding the Fourth Proportional to 12,810.32, 17,677.62 and 7,145.66

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Solution

The fourth proportional to 12,810.32, 17,677.62 and 7,145.66 is: 9,860.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.32 : 17,677.62 = 7,145.66 : x
  2. Step 2: Convert to fraction form
    12,810.32/17,677.62 = 7,145.66/x
  3. Step 3: Cross multiply
    12,810.32x = 17,677.62 × 7,145.66
  4. Step 4: Simplify right side
    12,810.32x = 126,318,262.13
  5. Step 5: Solve for x
    x = 126,318,262.13/12,810.32
  6. Step 6: Final answer
    x = 9,860.66

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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.