Home / 39,162.07-54,043.70-21,257.07

Finding the Fourth Proportional to 39,162.07, 54,043.70 and 21,257.07

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Solution

The fourth proportional to 39,162.07, 54,043.70 and 21,257.07 is: 29,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,162.07 : 54,043.70 = 21,257.07 : x
  2. Step 2: Convert to fraction form
    39,162.07/54,043.70 = 21,257.07/x
  3. Step 3: Cross multiply
    39,162.07x = 54,043.70 × 21,257.07
  4. Step 4: Simplify right side
    39,162.07x = 1,148,810,607.67
  5. Step 5: Solve for x
    x = 1,148,810,607.67/39,162.07
  6. Step 6: Final answer
    x = 29,334.78

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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.