Home / 20,207.08-27,903.39-12,666.37

Finding the Fourth Proportional to 20,207.08, 27,903.39 and 12,666.37

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Solution

The fourth proportional to 20,207.08, 27,903.39 and 12,666.37 is: 17,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.08 : 27,903.39 = 12,666.37 : x
  2. Step 2: Convert to fraction form
    20,207.08/27,903.39 = 12,666.37/x
  3. Step 3: Cross multiply
    20,207.08x = 27,903.39 × 12,666.37
  4. Step 4: Simplify right side
    20,207.08x = 353,434,661.99
  5. Step 5: Solve for x
    x = 353,434,661.99/20,207.08
  6. Step 6: Final answer
    x = 17,490.64

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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.