Home / 20,292.10-27,992.90-13,578.02

Finding the Fourth Proportional to 20,292.10, 27,992.90 and 13,578.02

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Solution

The fourth proportional to 20,292.10, 27,992.90 and 13,578.02 is: 18,730.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.10 : 27,992.90 = 13,578.02 : x
  2. Step 2: Convert to fraction form
    20,292.10/27,992.90 = 13,578.02/x
  3. Step 3: Cross multiply
    20,292.10x = 27,992.90 × 13,578.02
  4. Step 4: Simplify right side
    20,292.10x = 380,088,156.06
  5. Step 5: Solve for x
    x = 380,088,156.06/20,292.10
  6. Step 6: Final answer
    x = 18,730.84

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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.