Home / 20,638.74-30,905.73-17,298.21

Finding the Fourth Proportional to 20,638.74, 30,905.73 and 17,298.21

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Solution

The fourth proportional to 20,638.74, 30,905.73 and 17,298.21 is: 25,903.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.74 : 30,905.73 = 17,298.21 : x
  2. Step 2: Convert to fraction form
    20,638.74/30,905.73 = 17,298.21/x
  3. Step 3: Cross multiply
    20,638.74x = 30,905.73 × 17,298.21
  4. Step 4: Simplify right side
    20,638.74x = 534,613,807.74
  5. Step 5: Solve for x
    x = 534,613,807.74/20,638.74
  6. Step 6: Final answer
    x = 25,903.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.