Home / 39,340.43-54,289.08-21,435.56

Finding the Fourth Proportional to 39,340.43, 54,289.08 and 21,435.56

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Solution

The fourth proportional to 39,340.43, 54,289.08 and 21,435.56 is: 29,580.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.43 : 54,289.08 = 21,435.56 : x
  2. Step 2: Convert to fraction form
    39,340.43/54,289.08 = 21,435.56/x
  3. Step 3: Cross multiply
    39,340.43x = 54,289.08 × 21,435.56
  4. Step 4: Simplify right side
    39,340.43x = 1,163,716,560.24
  5. Step 5: Solve for x
    x = 1,163,716,560.24/39,340.43
  6. Step 6: Final answer
    x = 29,580.68

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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.