Home / 20,557.13-30,884.90-13,176

Finding the Fourth Proportional to 20,557.13, 30,884.90 and 13,176

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Solution

The fourth proportional to 20,557.13, 30,884.90 and 13,176 is: 19,795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.13 : 30,884.90 = 13,176 : x
  2. Step 2: Convert to fraction form
    20,557.13/30,884.90 = 13,176/x
  3. Step 3: Cross multiply
    20,557.13x = 30,884.90 × 13,176
  4. Step 4: Simplify right side
    20,557.13x = 406,939,376.52
  5. Step 5: Solve for x
    x = 406,939,376.52/20,557.13
  6. Step 6: Final answer
    x = 19,795.54

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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.