Home / 20,365.92-28,101.24-11,984.40

Finding the Fourth Proportional to 20,365.92, 28,101.24 and 11,984.40

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Solution

The fourth proportional to 20,365.92, 28,101.24 and 11,984.40 is: 16,536.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.92 : 28,101.24 = 11,984.40 : x
  2. Step 2: Convert to fraction form
    20,365.92/28,101.24 = 11,984.40/x
  3. Step 3: Cross multiply
    20,365.92x = 28,101.24 × 11,984.40
  4. Step 4: Simplify right side
    20,365.92x = 336,776,500.66
  5. Step 5: Solve for x
    x = 336,776,500.66/20,365.92
  6. Step 6: Final answer
    x = 16,536.28

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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.