Home / 39,320.12-54,262.80-21,415.88

Finding the Fourth Proportional to 39,320.12, 54,262.80 and 21,415.88

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Solution

The fourth proportional to 39,320.12, 54,262.80 and 21,415.88 is: 29,554.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,320.12 : 54,262.80 = 21,415.88 : x
  2. Step 2: Convert to fraction form
    39,320.12/54,262.80 = 21,415.88/x
  3. Step 3: Cross multiply
    39,320.12x = 54,262.80 × 21,415.88
  4. Step 4: Simplify right side
    39,320.12x = 1,162,085,613.26
  5. Step 5: Solve for x
    x = 1,162,085,613.26/39,320.12
  6. Step 6: Final answer
    x = 29,554.48

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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.