Home / 39,758.72-54,865.92-21,853.76

Finding the Fourth Proportional to 39,758.72, 54,865.92 and 21,853.76

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Solution

The fourth proportional to 39,758.72, 54,865.92 and 21,853.76 is: 30,157.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,758.72 : 54,865.92 = 21,853.76 : x
  2. Step 2: Convert to fraction form
    39,758.72/54,865.92 = 21,853.76/x
  3. Step 3: Cross multiply
    39,758.72x = 54,865.92 × 21,853.76
  4. Step 4: Simplify right side
    39,758.72x = 1,199,026,647.86
  5. Step 5: Solve for x
    x = 1,199,026,647.86/39,758.72
  6. Step 6: Final answer
    x = 30,157.58

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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.