Home / 20,031.36-27,622.80-13,318.08

Finding the Fourth Proportional to 20,031.36, 27,622.80 and 13,318.08

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Solution

The fourth proportional to 20,031.36, 27,622.80 and 13,318.08 is: 18,365.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.36 : 27,622.80 = 13,318.08 : x
  2. Step 2: Convert to fraction form
    20,031.36/27,622.80 = 13,318.08/x
  3. Step 3: Cross multiply
    20,031.36x = 27,622.80 × 13,318.08
  4. Step 4: Simplify right side
    20,031.36x = 367,882,660.22
  5. Step 5: Solve for x
    x = 367,882,660.22/20,031.36
  6. Step 6: Final answer
    x = 18,365.34

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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.