Home / 13,200.19-18,216.27-7,231.88

Finding the Fourth Proportional to 13,200.19, 18,216.27 and 7,231.88

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Solution

The fourth proportional to 13,200.19, 18,216.27 and 7,231.88 is: 9,980.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.19 : 18,216.27 = 7,231.88 : x
  2. Step 2: Convert to fraction form
    13,200.19/18,216.27 = 7,231.88/x
  3. Step 3: Cross multiply
    13,200.19x = 18,216.27 × 7,231.88
  4. Step 4: Simplify right side
    13,200.19x = 131,737,924.23
  5. Step 5: Solve for x
    x = 131,737,924.23/13,200.19
  6. Step 6: Final answer
    x = 9,980.00

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Half scale
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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.