Home / 13,444.26-18,555.36-8,742.20

Finding the Fourth Proportional to 13,444.26, 18,555.36 and 8,742.20

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Solution

The fourth proportional to 13,444.26, 18,555.36 and 8,742.20 is: 12,065.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,444.26 : 18,555.36 = 8,742.20 : x
  2. Step 2: Convert to fraction form
    13,444.26/18,555.36 = 8,742.20/x
  3. Step 3: Cross multiply
    13,444.26x = 18,555.36 × 8,742.20
  4. Step 4: Simplify right side
    13,444.26x = 162,214,668.19
  5. Step 5: Solve for x
    x = 162,214,668.19/13,444.26
  6. Step 6: Final answer
    x = 12,065.72

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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.