Home / 13,200.16-18,216.14-7,231.86

Finding the Fourth Proportional to 13,200.16, 18,216.14 and 7,231.86

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Solution

The fourth proportional to 13,200.16, 18,216.14 and 7,231.86 is: 9,979.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.16 : 18,216.14 = 7,231.86 : x
  2. Step 2: Convert to fraction form
    13,200.16/18,216.14 = 7,231.86/x
  3. Step 3: Cross multiply
    13,200.16x = 18,216.14 × 7,231.86
  4. Step 4: Simplify right side
    13,200.16x = 131,736,574.22
  5. Step 5: Solve for x
    x = 131,736,574.22/13,200.16
  6. Step 6: Final answer
    x = 9,979.92

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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.