Home / 39,435.68-54,421.52-21,531.04

Finding the Fourth Proportional to 39,435.68, 54,421.52 and 21,531.04

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Solution

The fourth proportional to 39,435.68, 54,421.52 and 21,531.04 is: 29,712.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,435.68 : 54,421.52 = 21,531.04 : x
  2. Step 2: Convert to fraction form
    39,435.68/54,421.52 = 21,531.04/x
  3. Step 3: Cross multiply
    39,435.68x = 54,421.52 × 21,531.04
  4. Step 4: Simplify right side
    39,435.68x = 1,171,751,923.98
  5. Step 5: Solve for x
    x = 1,171,751,923.98/39,435.68
  6. Step 6: Final answer
    x = 29,712.99

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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.