Home / 39,235.72-54,146.36-21,331.93

Finding the Fourth Proportional to 39,235.72, 54,146.36 and 21,331.93

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Solution

The fourth proportional to 39,235.72, 54,146.36 and 21,331.93 is: 29,438.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.72 : 54,146.36 = 21,331.93 : x
  2. Step 2: Convert to fraction form
    39,235.72/54,146.36 = 21,331.93/x
  3. Step 3: Cross multiply
    39,235.72x = 54,146.36 × 21,331.93
  4. Step 4: Simplify right side
    39,235.72x = 1,155,045,983.88
  5. Step 5: Solve for x
    x = 1,155,045,983.88/39,235.72
  6. Step 6: Final answer
    x = 29,438.64

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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.