Home / 19,131.60-28,703.07-9,143.82

Finding the Fourth Proportional to 19,131.60, 28,703.07 and 9,143.82

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Solution

The fourth proportional to 19,131.60, 28,703.07 and 9,143.82 is: 13,718.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.60 : 28,703.07 = 9,143.82 : x
  2. Step 2: Convert to fraction form
    19,131.60/28,703.07 = 9,143.82/x
  3. Step 3: Cross multiply
    19,131.60x = 28,703.07 × 9,143.82
  4. Step 4: Simplify right side
    19,131.60x = 262,455,705.53
  5. Step 5: Solve for x
    x = 262,455,705.53/19,131.60
  6. Step 6: Final answer
    x = 13,718.44

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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.