Home / 13,173.90-18,180.45-7,509.50

Finding the Fourth Proportional to 13,173.90, 18,180.45 and 7,509.50

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Solution

The fourth proportional to 13,173.90, 18,180.45 and 7,509.50 is: 10,363.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.90 : 18,180.45 = 7,509.50 : x
  2. Step 2: Convert to fraction form
    13,173.90/18,180.45 = 7,509.50/x
  3. Step 3: Cross multiply
    13,173.90x = 18,180.45 × 7,509.50
  4. Step 4: Simplify right side
    13,173.90x = 136,526,134.73
  5. Step 5: Solve for x
    x = 136,526,134.73/13,173.90
  6. Step 6: Final answer
    x = 10,363.38

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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.