Home / 20,398.39-30,428.07-20,060.06

Finding the Fourth Proportional to 20,398.39, 30,428.07 and 20,060.06

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Solution

The fourth proportional to 20,398.39, 30,428.07 and 20,060.06 is: 29,923.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.39 : 30,428.07 = 20,060.06 : x
  2. Step 2: Convert to fraction form
    20,398.39/30,428.07 = 20,060.06/x
  3. Step 3: Cross multiply
    20,398.39x = 30,428.07 × 20,060.06
  4. Step 4: Simplify right side
    20,398.39x = 610,388,909.88
  5. Step 5: Solve for x
    x = 610,388,909.88/20,398.39
  6. Step 6: Final answer
    x = 29,923.39

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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.