Home / 12,146.12-16,767.12-9,007.78

Finding the Fourth Proportional to 12,146.12, 16,767.12 and 9,007.78

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Solution

The fourth proportional to 12,146.12, 16,767.12 and 9,007.78 is: 12,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.12 : 16,767.12 = 9,007.78 : x
  2. Step 2: Convert to fraction form
    12,146.12/16,767.12 = 9,007.78/x
  3. Step 3: Cross multiply
    12,146.12x = 16,767.12 × 9,007.78
  4. Step 4: Simplify right side
    12,146.12x = 151,034,528.19
  5. Step 5: Solve for x
    x = 151,034,528.19/12,146.12
  6. Step 6: Final answer
    x = 12,434.80

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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.