Home / 13,172.95-18,180.41-7,509.75

Finding the Fourth Proportional to 13,172.95, 18,180.41 and 7,509.75

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Solution

The fourth proportional to 13,172.95, 18,180.41 and 7,509.75 is: 10,364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.95 : 18,180.41 = 7,509.75 : x
  2. Step 2: Convert to fraction form
    13,172.95/18,180.41 = 7,509.75/x
  3. Step 3: Cross multiply
    13,172.95x = 18,180.41 × 7,509.75
  4. Step 4: Simplify right side
    13,172.95x = 136,530,334.00
  5. Step 5: Solve for x
    x = 136,530,334.00/13,172.95
  6. Step 6: Final answer
    x = 10,364.45

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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.