Home / 18,221.64-27,312.99-13,011.72

Finding the Fourth Proportional to 18,221.64, 27,312.99 and 13,011.72

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Solution

The fourth proportional to 18,221.64, 27,312.99 and 13,011.72 is: 19,503.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.64 : 27,312.99 = 13,011.72 : x
  2. Step 2: Convert to fraction form
    18,221.64/27,312.99 = 13,011.72/x
  3. Step 3: Cross multiply
    18,221.64x = 27,312.99 × 13,011.72
  4. Step 4: Simplify right side
    18,221.64x = 355,388,978.24
  5. Step 5: Solve for x
    x = 355,388,978.24/18,221.64
  6. Step 6: Final answer
    x = 19,503.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.