Home / 13,173.08-18,180.59-7,509.87

Finding the Fourth Proportional to 13,173.08, 18,180.59 and 7,509.87

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Solution

The fourth proportional to 13,173.08, 18,180.59 and 7,509.87 is: 10,364.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.08 : 18,180.59 = 7,509.87 : x
  2. Step 2: Convert to fraction form
    13,173.08/18,180.59 = 7,509.87/x
  3. Step 3: Cross multiply
    13,173.08x = 18,180.59 × 7,509.87
  4. Step 4: Simplify right side
    13,173.08x = 136,533,829.87
  5. Step 5: Solve for x
    x = 136,533,829.87/13,173.08
  6. Step 6: Final answer
    x = 10,364.61

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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.