Home / 29,279.90-40,388.55-21,615.59

Finding the Fourth Proportional to 29,279.90, 40,388.55 and 21,615.59

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Solution

The fourth proportional to 29,279.90, 40,388.55 and 21,615.59 is: 29,816.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,279.90 : 40,388.55 = 21,615.59 : x
  2. Step 2: Convert to fraction form
    29,279.90/40,388.55 = 21,615.59/x
  3. Step 3: Cross multiply
    29,279.90x = 40,388.55 × 21,615.59
  4. Step 4: Simplify right side
    29,279.90x = 873,022,337.49
  5. Step 5: Solve for x
    x = 873,022,337.49/29,279.90
  6. Step 6: Final answer
    x = 29,816.44

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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.