Home / 13,434.42-18,541.20-8,129.22

Finding the Fourth Proportional to 13,434.42, 18,541.20 and 8,129.22

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Solution

The fourth proportional to 13,434.42, 18,541.20 and 8,129.22 is: 11,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.42 : 18,541.20 = 8,129.22 : x
  2. Step 2: Convert to fraction form
    13,434.42/18,541.20 = 8,129.22/x
  3. Step 3: Cross multiply
    13,434.42x = 18,541.20 × 8,129.22
  4. Step 4: Simplify right side
    13,434.42x = 150,725,493.86
  5. Step 5: Solve for x
    x = 150,725,493.86/13,434.42
  6. Step 6: Final answer
    x = 11,219.35

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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.