Home / 20,191.16-27,875.39-13,498.94

Finding the Fourth Proportional to 20,191.16, 27,875.39 and 13,498.94

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Solution

The fourth proportional to 20,191.16, 27,875.39 and 13,498.94 is: 18,636.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.16 : 27,875.39 = 13,498.94 : x
  2. Step 2: Convert to fraction form
    20,191.16/27,875.39 = 13,498.94/x
  3. Step 3: Cross multiply
    20,191.16x = 27,875.39 × 13,498.94
  4. Step 4: Simplify right side
    20,191.16x = 376,288,010.21
  5. Step 5: Solve for x
    x = 376,288,010.21/20,191.16
  6. Step 6: Final answer
    x = 18,636.28

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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.