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Finding the Fourth Proportional to 20,609.58, 30,649.29 and 19,953.48

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Solution

The fourth proportional to 20,609.58, 30,649.29 and 19,953.48 is: 29,673.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.58 : 30,649.29 = 19,953.48 : x
  2. Step 2: Convert to fraction form
    20,609.58/30,649.29 = 19,953.48/x
  3. Step 3: Cross multiply
    20,609.58x = 30,649.29 × 19,953.48
  4. Step 4: Simplify right side
    20,609.58x = 611,559,995.03
  5. Step 5: Solve for x
    x = 611,559,995.03/20,609.58
  6. Step 6: Final answer
    x = 29,673.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.