Home / 39,358.47-54,313.11-21,453.09

Finding the Fourth Proportional to 39,358.47, 54,313.11 and 21,453.09

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Solution

The fourth proportional to 39,358.47, 54,313.11 and 21,453.09 is: 29,604.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,358.47 : 54,313.11 = 21,453.09 : x
  2. Step 2: Convert to fraction form
    39,358.47/54,313.11 = 21,453.09/x
  3. Step 3: Cross multiply
    39,358.47x = 54,313.11 × 21,453.09
  4. Step 4: Simplify right side
    39,358.47x = 1,165,184,037.01
  5. Step 5: Solve for x
    x = 1,165,184,037.01/39,358.47
  6. Step 6: Final answer
    x = 29,604.40

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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.