Home / 13,613.48-18,792.36-8,310.20

Finding the Fourth Proportional to 13,613.48, 18,792.36 and 8,310.20

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Solution

The fourth proportional to 13,613.48, 18,792.36 and 8,310.20 is: 11,471.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.48 : 18,792.36 = 8,310.20 : x
  2. Step 2: Convert to fraction form
    13,613.48/18,792.36 = 8,310.20/x
  3. Step 3: Cross multiply
    13,613.48x = 18,792.36 × 8,310.20
  4. Step 4: Simplify right side
    13,613.48x = 156,168,270.07
  5. Step 5: Solve for x
    x = 156,168,270.07/13,613.48
  6. Step 6: Final answer
    x = 11,471.59

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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.