Home / 12,008.97-18,013.59-9,428.31

Finding the Fourth Proportional to 12,008.97, 18,013.59 and 9,428.31

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Solution

The fourth proportional to 12,008.97, 18,013.59 and 9,428.31 is: 14,142.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.97 : 18,013.59 = 9,428.31 : x
  2. Step 2: Convert to fraction form
    12,008.97/18,013.59 = 9,428.31/x
  3. Step 3: Cross multiply
    12,008.97x = 18,013.59 × 9,428.31
  4. Step 4: Simplify right side
    12,008.97x = 169,837,710.73
  5. Step 5: Solve for x
    x = 169,837,710.73/12,008.97
  6. Step 6: Final answer
    x = 14,142.57

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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.