Home / 13,430.44-18,532.74-12,439.72

Finding the Fourth Proportional to 13,430.44, 18,532.74 and 12,439.72

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Solution

The fourth proportional to 13,430.44, 18,532.74 and 12,439.72 is: 17,165.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.44 : 18,532.74 = 12,439.72 : x
  2. Step 2: Convert to fraction form
    13,430.44/18,532.74 = 12,439.72/x
  3. Step 3: Cross multiply
    13,430.44x = 18,532.74 × 12,439.72
  4. Step 4: Simplify right side
    13,430.44x = 230,542,096.43
  5. Step 5: Solve for x
    x = 230,542,096.43/13,430.44
  6. Step 6: Final answer
    x = 17,165.64

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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.