Home / 30,115.53-45,179.91-12,346.31

Finding the Fourth Proportional to 30,115.53, 45,179.91 and 12,346.31

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Solution

The fourth proportional to 30,115.53, 45,179.91 and 12,346.31 is: 18,522.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,115.53 : 45,179.91 = 12,346.31 : x
  2. Step 2: Convert to fraction form
    30,115.53/45,179.91 = 12,346.31/x
  3. Step 3: Cross multiply
    30,115.53x = 45,179.91 × 12,346.31
  4. Step 4: Simplify right side
    30,115.53x = 557,805,287.58
  5. Step 5: Solve for x
    x = 557,805,287.58/30,115.53
  6. Step 6: Final answer
    x = 18,522.18

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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.