Home / 19,687.95-29,521.08-13,455

Finding the Fourth Proportional to 19,687.95, 29,521.08 and 13,455

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Solution

The fourth proportional to 19,687.95, 29,521.08 and 13,455 is: 20,175.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.95 : 29,521.08 = 13,455 : x
  2. Step 2: Convert to fraction form
    19,687.95/29,521.08 = 13,455/x
  3. Step 3: Cross multiply
    19,687.95x = 29,521.08 × 13,455
  4. Step 4: Simplify right side
    19,687.95x = 397,206,131.40
  5. Step 5: Solve for x
    x = 397,206,131.40/19,687.95
  6. Step 6: Final answer
    x = 20,175.09

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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.