Home / 28,521.84-42,790.06-11,876.36

Finding the Fourth Proportional to 28,521.84, 42,790.06 and 11,876.36

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Solution

The fourth proportional to 28,521.84, 42,790.06 and 11,876.36 is: 17,817.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.84 : 42,790.06 = 11,876.36 : x
  2. Step 2: Convert to fraction form
    28,521.84/42,790.06 = 11,876.36/x
  3. Step 3: Cross multiply
    28,521.84x = 42,790.06 × 11,876.36
  4. Step 4: Simplify right side
    28,521.84x = 508,190,156.98
  5. Step 5: Solve for x
    x = 508,190,156.98/28,521.84
  6. Step 6: Final answer
    x = 17,817.58

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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.