Home / 19,288.80-28,908-10,521.36

Finding the Fourth Proportional to 19,288.80, 28,908 and 10,521.36

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Solution

The fourth proportional to 19,288.80, 28,908 and 10,521.36 is: 15,768.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,288.80 : 28,908 = 10,521.36 : x
  2. Step 2: Convert to fraction form
    19,288.80/28,908 = 10,521.36/x
  3. Step 3: Cross multiply
    19,288.80x = 28,908 × 10,521.36
  4. Step 4: Simplify right side
    19,288.80x = 304,151,474.88
  5. Step 5: Solve for x
    x = 304,151,474.88/19,288.80
  6. Step 6: Final answer
    x = 15,768.29

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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.