Home / 39,340.42-54,289.79-21,435.43

Finding the Fourth Proportional to 39,340.42, 54,289.79 and 21,435.43

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Solution

The fourth proportional to 39,340.42, 54,289.79 and 21,435.43 is: 29,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.42 : 54,289.79 = 21,435.43 : x
  2. Step 2: Convert to fraction form
    39,340.42/54,289.79 = 21,435.43/x
  3. Step 3: Cross multiply
    39,340.42x = 54,289.79 × 21,435.43
  4. Step 4: Simplify right side
    39,340.42x = 1,163,724,879.29
  5. Step 5: Solve for x
    x = 1,163,724,879.29/39,340.42
  6. Step 6: Final answer
    x = 29,580.89

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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.