Home / 18,428.06-25,434.84-11,712.38

Finding the Fourth Proportional to 18,428.06, 25,434.84 and 11,712.38

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Solution

The fourth proportional to 18,428.06, 25,434.84 and 11,712.38 is: 16,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.06 : 25,434.84 = 11,712.38 : x
  2. Step 2: Convert to fraction form
    18,428.06/25,434.84 = 11,712.38/x
  3. Step 3: Cross multiply
    18,428.06x = 25,434.84 × 11,712.38
  4. Step 4: Simplify right side
    18,428.06x = 297,902,511.32
  5. Step 5: Solve for x
    x = 297,902,511.32/18,428.06
  6. Step 6: Final answer
    x = 16,165.70

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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.