Home / 39,412.87-54,390.92-21,509.03

Finding the Fourth Proportional to 39,412.87, 54,390.92 and 21,509.03

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Solution

The fourth proportional to 39,412.87, 54,390.92 and 21,509.03 is: 29,683.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,412.87 : 54,390.92 = 21,509.03 : x
  2. Step 2: Convert to fraction form
    39,412.87/54,390.92 = 21,509.03/x
  3. Step 3: Cross multiply
    39,412.87x = 54,390.92 × 21,509.03
  4. Step 4: Simplify right side
    39,412.87x = 1,169,895,550.51
  5. Step 5: Solve for x
    x = 1,169,895,550.51/39,412.87
  6. Step 6: Final answer
    x = 29,683.09

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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.