Home / 39,412.92-54,389.58-21,507.56

Finding the Fourth Proportional to 39,412.92, 54,389.58 and 21,507.56

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Solution

The fourth proportional to 39,412.92, 54,389.58 and 21,507.56 is: 29,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,412.92 : 54,389.58 = 21,507.56 : x
  2. Step 2: Convert to fraction form
    39,412.92/54,389.58 = 21,507.56/x
  3. Step 3: Cross multiply
    39,412.92x = 54,389.58 × 21,507.56
  4. Step 4: Simplify right side
    39,412.92x = 1,169,787,155.22
  5. Step 5: Solve for x
    x = 1,169,787,155.22/39,412.92
  6. Step 6: Final answer
    x = 29,680.30

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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.