Home / 18,428.10-27,628.65-7,329.30

Finding the Fourth Proportional to 18,428.10, 27,628.65 and 7,329.30

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Solution

The fourth proportional to 18,428.10, 27,628.65 and 7,329.30 is: 10,988.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.10 : 27,628.65 = 7,329.30 : x
  2. Step 2: Convert to fraction form
    18,428.10/27,628.65 = 7,329.30/x
  3. Step 3: Cross multiply
    18,428.10x = 27,628.65 × 7,329.30
  4. Step 4: Simplify right side
    18,428.10x = 202,498,664.45
  5. Step 5: Solve for x
    x = 202,498,664.45/18,428.10
  6. Step 6: Final answer
    x = 10,988.58

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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.