Home / 13,168.81-18,173.22-7,200.85

Finding the Fourth Proportional to 13,168.81, 18,173.22 and 7,200.85

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Solution

The fourth proportional to 13,168.81, 18,173.22 and 7,200.85 is: 9,937.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.81 : 18,173.22 = 7,200.85 : x
  2. Step 2: Convert to fraction form
    13,168.81/18,173.22 = 7,200.85/x
  3. Step 3: Cross multiply
    13,168.81x = 18,173.22 × 7,200.85
  4. Step 4: Simplify right side
    13,168.81x = 130,862,631.24
  5. Step 5: Solve for x
    x = 130,862,631.24/13,168.81
  6. Step 6: Final answer
    x = 9,937.32

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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.