Home / 13,585.20-18,743.74-8,805.34

Finding the Fourth Proportional to 13,585.20, 18,743.74 and 8,805.34

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Solution

The fourth proportional to 13,585.20, 18,743.74 and 8,805.34 is: 12,148.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.20 : 18,743.74 = 8,805.34 : x
  2. Step 2: Convert to fraction form
    13,585.20/18,743.74 = 8,805.34/x
  3. Step 3: Cross multiply
    13,585.20x = 18,743.74 × 8,805.34
  4. Step 4: Simplify right side
    13,585.20x = 165,045,057.63
  5. Step 5: Solve for x
    x = 165,045,057.63/13,585.20
  6. Step 6: Final answer
    x = 12,148.89

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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.