Home / 39,249.39-54,165.18-21,345.45

Finding the Fourth Proportional to 39,249.39, 54,165.18 and 21,345.45

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Solution

The fourth proportional to 39,249.39, 54,165.18 and 21,345.45 is: 29,457.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,249.39 : 54,165.18 = 21,345.45 : x
  2. Step 2: Convert to fraction form
    39,249.39/54,165.18 = 21,345.45/x
  3. Step 3: Cross multiply
    39,249.39x = 54,165.18 × 21,345.45
  4. Step 4: Simplify right side
    39,249.39x = 1,156,180,141.43
  5. Step 5: Solve for x
    x = 1,156,180,141.43/39,249.39
  6. Step 6: Final answer
    x = 29,457.28

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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.