Home / 13,445.64-20,125.20-7,190

Finding the Fourth Proportional to 13,445.64, 20,125.20 and 7,190

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Solution

The fourth proportional to 13,445.64, 20,125.20 and 7,190 is: 10,761.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.64 : 20,125.20 = 7,190 : x
  2. Step 2: Convert to fraction form
    13,445.64/20,125.20 = 7,190/x
  3. Step 3: Cross multiply
    13,445.64x = 20,125.20 × 7,190
  4. Step 4: Simplify right side
    13,445.64x = 144,700,188
  5. Step 5: Solve for x
    x = 144,700,188/13,445.64
  6. Step 6: Final answer
    x = 10,761.87

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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.