Home / 20,937.91-28,892.64-11,983.36

Finding the Fourth Proportional to 20,937.91, 28,892.64 and 11,983.36

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Solution

The fourth proportional to 20,937.91, 28,892.64 and 11,983.36 is: 16,536.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.91 : 28,892.64 = 11,983.36 : x
  2. Step 2: Convert to fraction form
    20,937.91/28,892.64 = 11,983.36/x
  3. Step 3: Cross multiply
    20,937.91x = 28,892.64 × 11,983.36
  4. Step 4: Simplify right side
    20,937.91x = 346,230,906.47
  5. Step 5: Solve for x
    x = 346,230,906.47/20,937.91
  6. Step 6: Final answer
    x = 16,536.08

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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.