Home / 39,595.74-54,642.40-21,690.84

Finding the Fourth Proportional to 39,595.74, 54,642.40 and 21,690.84

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Solution

The fourth proportional to 39,595.74, 54,642.40 and 21,690.84 is: 29,933.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,595.74 : 54,642.40 = 21,690.84 : x
  2. Step 2: Convert to fraction form
    39,595.74/54,642.40 = 21,690.84/x
  3. Step 3: Cross multiply
    39,595.74x = 54,642.40 × 21,690.84
  4. Step 4: Simplify right side
    39,595.74x = 1,185,239,555.62
  5. Step 5: Solve for x
    x = 1,185,239,555.62/39,595.74
  6. Step 6: Final answer
    x = 29,933.51

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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.