Home / 39,315.50-54,254.58-21,410.82

Finding the Fourth Proportional to 39,315.50, 54,254.58 and 21,410.82

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Solution

The fourth proportional to 39,315.50, 54,254.58 and 21,410.82 is: 29,546.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,315.50 : 54,254.58 = 21,410.82 : x
  2. Step 2: Convert to fraction form
    39,315.50/54,254.58 = 21,410.82/x
  3. Step 3: Cross multiply
    39,315.50x = 54,254.58 × 21,410.82
  4. Step 4: Simplify right side
    39,315.50x = 1,161,635,046.56
  5. Step 5: Solve for x
    x = 1,161,635,046.56/39,315.50
  6. Step 6: Final answer
    x = 29,546.49

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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.