Home / 19,134.90-28,655.82-13,561.70

Finding the Fourth Proportional to 19,134.90, 28,655.82 and 13,561.70

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Solution

The fourth proportional to 19,134.90, 28,655.82 and 13,561.70 is: 20,309.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,134.90 : 28,655.82 = 13,561.70 : x
  2. Step 2: Convert to fraction form
    19,134.90/28,655.82 = 13,561.70/x
  3. Step 3: Cross multiply
    19,134.90x = 28,655.82 × 13,561.70
  4. Step 4: Simplify right side
    19,134.90x = 388,621,490.81
  5. Step 5: Solve for x
    x = 388,621,490.81/19,134.90
  6. Step 6: Final answer
    x = 20,309.56

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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.