Home / 18,428.51-27,628.17-18,405.83

Finding the Fourth Proportional to 18,428.51, 27,628.17 and 18,405.83

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Solution

The fourth proportional to 18,428.51, 27,628.17 and 18,405.83 is: 27,594.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.51 : 27,628.17 = 18,405.83 : x
  2. Step 2: Convert to fraction form
    18,428.51/27,628.17 = 18,405.83/x
  3. Step 3: Cross multiply
    18,428.51x = 27,628.17 × 18,405.83
  4. Step 4: Simplify right side
    18,428.51x = 508,519,262.09
  5. Step 5: Solve for x
    x = 508,519,262.09/18,428.51
  6. Step 6: Final answer
    x = 27,594.17

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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.