Home / 18,430.34-25,441.44-12,470.09

Finding the Fourth Proportional to 18,430.34, 25,441.44 and 12,470.09

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Solution

The fourth proportional to 18,430.34, 25,441.44 and 12,470.09 is: 17,213.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.34 : 25,441.44 = 12,470.09 : x
  2. Step 2: Convert to fraction form
    18,430.34/25,441.44 = 12,470.09/x
  3. Step 3: Cross multiply
    18,430.34x = 25,441.44 × 12,470.09
  4. Step 4: Simplify right side
    18,430.34x = 317,257,046.53
  5. Step 5: Solve for x
    x = 317,257,046.53/18,430.34
  6. Step 6: Final answer
    x = 17,213.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.