Home / 39,305.00-54,240.55-21,399.98

Finding the Fourth Proportional to 39,305.00, 54,240.55 and 21,399.98

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Solution

The fourth proportional to 39,305.00, 54,240.55 and 21,399.98 is: 29,531.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,305.00 : 54,240.55 = 21,399.98 : x
  2. Step 2: Convert to fraction form
    39,305.00/54,240.55 = 21,399.98/x
  3. Step 3: Cross multiply
    39,305.00x = 54,240.55 × 21,399.98
  4. Step 4: Simplify right side
    39,305.00x = 1,160,746,360.49
  5. Step 5: Solve for x
    x = 1,160,746,360.49/39,305.00
  6. Step 6: Final answer
    x = 29,531.77

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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.