Home / 13,221.45-18,245.49-7,253.01

Finding the Fourth Proportional to 13,221.45, 18,245.49 and 7,253.01

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Solution

The fourth proportional to 13,221.45, 18,245.49 and 7,253.01 is: 10,009.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.45 : 18,245.49 = 7,253.01 : x
  2. Step 2: Convert to fraction form
    13,221.45/18,245.49 = 7,253.01/x
  3. Step 3: Cross multiply
    13,221.45x = 18,245.49 × 7,253.01
  4. Step 4: Simplify right side
    13,221.45x = 132,334,721.42
  5. Step 5: Solve for x
    x = 132,334,721.42/13,221.45
  6. Step 6: Final answer
    x = 10,009.09

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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.