Home / 39,313.68-54,252.18-21,408.36

Finding the Fourth Proportional to 39,313.68, 54,252.18 and 21,408.36

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Solution

The fourth proportional to 39,313.68, 54,252.18 and 21,408.36 is: 29,543.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,313.68 : 54,252.18 = 21,408.36 : x
  2. Step 2: Convert to fraction form
    39,313.68/54,252.18 = 21,408.36/x
  3. Step 3: Cross multiply
    39,313.68x = 54,252.18 × 21,408.36
  4. Step 4: Simplify right side
    39,313.68x = 1,161,450,200.22
  5. Step 5: Solve for x
    x = 1,161,450,200.22/39,313.68
  6. Step 6: Final answer
    x = 29,543.16

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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.