Home / 39,435.43-54,421.18-21,530.79

Finding the Fourth Proportional to 39,435.43, 54,421.18 and 21,530.79

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Solution

The fourth proportional to 39,435.43, 54,421.18 and 21,530.79 is: 29,712.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,435.43 : 54,421.18 = 21,530.79 : x
  2. Step 2: Convert to fraction form
    39,435.43/54,421.18 = 21,530.79/x
  3. Step 3: Cross multiply
    39,435.43x = 54,421.18 × 21,530.79
  4. Step 4: Simplify right side
    39,435.43x = 1,171,730,890.48
  5. Step 5: Solve for x
    x = 1,171,730,890.48/39,435.43
  6. Step 6: Final answer
    x = 29,712.64

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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.