Home / 39,595.68-54,642.21-21,690.30

Finding the Fourth Proportional to 39,595.68, 54,642.21 and 21,690.30

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Solution

The fourth proportional to 39,595.68, 54,642.21 and 21,690.30 is: 29,932.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,595.68 : 54,642.21 = 21,690.30 : x
  2. Step 2: Convert to fraction form
    39,595.68/54,642.21 = 21,690.30/x
  3. Step 3: Cross multiply
    39,595.68x = 54,642.21 × 21,690.30
  4. Step 4: Simplify right side
    39,595.68x = 1,185,205,927.56
  5. Step 5: Solve for x
    x = 1,185,205,927.56/39,595.68
  6. Step 6: Final answer
    x = 29,932.71

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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.