Home / 20,124.08-27,770.69-11,171.35

Finding the Fourth Proportional to 20,124.08, 27,770.69 and 11,171.35

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Solution

The fourth proportional to 20,124.08, 27,770.69 and 11,171.35 is: 15,416.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.08 : 27,770.69 = 11,171.35 : x
  2. Step 2: Convert to fraction form
    20,124.08/27,770.69 = 11,171.35/x
  3. Step 3: Cross multiply
    20,124.08x = 27,770.69 × 11,171.35
  4. Step 4: Simplify right side
    20,124.08x = 310,236,111.30
  5. Step 5: Solve for x
    x = 310,236,111.30/20,124.08
  6. Step 6: Final answer
    x = 15,416.16

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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.