Home / 39,400.35-54,372.90-21,495.30

Finding the Fourth Proportional to 39,400.35, 54,372.90 and 21,495.30

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Solution

The fourth proportional to 39,400.35, 54,372.90 and 21,495.30 is: 29,663.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,400.35 : 54,372.90 = 21,495.30 : x
  2. Step 2: Convert to fraction form
    39,400.35/54,372.90 = 21,495.30/x
  3. Step 3: Cross multiply
    39,400.35x = 54,372.90 × 21,495.30
  4. Step 4: Simplify right side
    39,400.35x = 1,168,761,797.37
  5. Step 5: Solve for x
    x = 1,168,761,797.37/39,400.35
  6. Step 6: Final answer
    x = 29,663.74

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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.