Home / 39,309.09-54,245.28-21,403.95

Finding the Fourth Proportional to 39,309.09, 54,245.28 and 21,403.95

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Solution

The fourth proportional to 39,309.09, 54,245.28 and 21,403.95 is: 29,536.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.09 : 54,245.28 = 21,403.95 : x
  2. Step 2: Convert to fraction form
    39,309.09/54,245.28 = 21,403.95/x
  3. Step 3: Cross multiply
    39,309.09x = 54,245.28 × 21,403.95
  4. Step 4: Simplify right side
    39,309.09x = 1,161,063,260.86
  5. Step 5: Solve for x
    x = 1,161,063,260.86/39,309.09
  6. Step 6: Final answer
    x = 29,536.76

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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.