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Finding the Fourth Proportional to 39,602.34, 54,649.97 and 21,697.19

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Solution

The fourth proportional to 39,602.34, 54,649.97 and 21,697.19 is: 29,941.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,602.34 : 54,649.97 = 21,697.19 : x
  2. Step 2: Convert to fraction form
    39,602.34/54,649.97 = 21,697.19/x
  3. Step 3: Cross multiply
    39,602.34x = 54,649.97 × 21,697.19
  4. Step 4: Simplify right side
    39,602.34x = 1,185,750,782.58
  5. Step 5: Solve for x
    x = 1,185,750,782.58/39,602.34
  6. Step 6: Final answer
    x = 29,941.43

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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.