Home / 39,422.58-54,400.84-21,513.98

Finding the Fourth Proportional to 39,422.58, 54,400.84 and 21,513.98

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Solution

The fourth proportional to 39,422.58, 54,400.84 and 21,513.98 is: 29,688.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,422.58 : 54,400.84 = 21,513.98 : x
  2. Step 2: Convert to fraction form
    39,422.58/54,400.84 = 21,513.98/x
  3. Step 3: Cross multiply
    39,422.58x = 54,400.84 × 21,513.98
  4. Step 4: Simplify right side
    39,422.58x = 1,170,378,583.74
  5. Step 5: Solve for x
    x = 1,170,378,583.74/39,422.58
  6. Step 6: Final answer
    x = 29,688.03

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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.