Home / 39,165.36-54,046.64-21,259.76

Finding the Fourth Proportional to 39,165.36, 54,046.64 and 21,259.76

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Solution

The fourth proportional to 39,165.36, 54,046.64 and 21,259.76 is: 29,337.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,165.36 : 54,046.64 = 21,259.76 : x
  2. Step 2: Convert to fraction form
    39,165.36/54,046.64 = 21,259.76/x
  3. Step 3: Cross multiply
    39,165.36x = 54,046.64 × 21,259.76
  4. Step 4: Simplify right side
    39,165.36x = 1,149,018,595.21
  5. Step 5: Solve for x
    x = 1,149,018,595.21/39,165.36
  6. Step 6: Final answer
    x = 29,337.62

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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.