Home / 13,613.22-20,419.81-4,254.04

Finding the Fourth Proportional to 13,613.22, 20,419.81 and 4,254.04

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Solution

The fourth proportional to 13,613.22, 20,419.81 and 4,254.04 is: 6,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.22 : 20,419.81 = 4,254.04 : x
  2. Step 2: Convert to fraction form
    13,613.22/20,419.81 = 4,254.04/x
  3. Step 3: Cross multiply
    13,613.22x = 20,419.81 × 4,254.04
  4. Step 4: Simplify right side
    13,613.22x = 86,866,688.53
  5. Step 5: Solve for x
    x = 86,866,688.53/13,613.22
  6. Step 6: Final answer
    x = 6,381.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.