Home / 20,187.77-30,234.69-19,486.98

Finding the Fourth Proportional to 20,187.77, 30,234.69 and 19,486.98

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Solution

The fourth proportional to 20,187.77, 30,234.69 and 19,486.98 is: 29,185.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.77 : 30,234.69 = 19,486.98 : x
  2. Step 2: Convert to fraction form
    20,187.77/30,234.69 = 19,486.98/x
  3. Step 3: Cross multiply
    20,187.77x = 30,234.69 × 19,486.98
  4. Step 4: Simplify right side
    20,187.77x = 589,182,799.34
  5. Step 5: Solve for x
    x = 589,182,799.34/20,187.77
  6. Step 6: Final answer
    x = 29,185.14

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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.