Home / 15,678.13-23,518.41-3,991.25

Finding the Fourth Proportional to 15,678.13, 23,518.41 and 3,991.25

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Solution

The fourth proportional to 15,678.13, 23,518.41 and 3,991.25 is: 5,987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.13 : 23,518.41 = 3,991.25 : x
  2. Step 2: Convert to fraction form
    15,678.13/23,518.41 = 3,991.25/x
  3. Step 3: Cross multiply
    15,678.13x = 23,518.41 × 3,991.25
  4. Step 4: Simplify right side
    15,678.13x = 93,867,853.91
  5. Step 5: Solve for x
    x = 93,867,853.91/15,678.13
  6. Step 6: Final answer
    x = 5,987.18

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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.