Home / 13,380.75-18,445.75-10,188.48

Finding the Fourth Proportional to 13,380.75, 18,445.75 and 10,188.48

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Solution

The fourth proportional to 13,380.75, 18,445.75 and 10,188.48 is: 14,045.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.75 : 18,445.75 = 10,188.48 : x
  2. Step 2: Convert to fraction form
    13,380.75/18,445.75 = 10,188.48/x
  3. Step 3: Cross multiply
    13,380.75x = 18,445.75 × 10,188.48
  4. Step 4: Simplify right side
    13,380.75x = 187,934,154.96
  5. Step 5: Solve for x
    x = 187,934,154.96/13,380.75
  6. Step 6: Final answer
    x = 14,045.11

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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.