Home / 18,390.84-27,590.56-5,243.40

Finding the Fourth Proportional to 18,390.84, 27,590.56 and 5,243.40

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Solution

The fourth proportional to 18,390.84, 27,590.56 and 5,243.40 is: 7,866.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.84 : 27,590.56 = 5,243.40 : x
  2. Step 2: Convert to fraction form
    18,390.84/27,590.56 = 5,243.40/x
  3. Step 3: Cross multiply
    18,390.84x = 27,590.56 × 5,243.40
  4. Step 4: Simplify right side
    18,390.84x = 144,668,342.30
  5. Step 5: Solve for x
    x = 144,668,342.30/18,390.84
  6. Step 6: Final answer
    x = 7,866.33

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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.