Home / 28,539.09-42,801.71-11,890.04

Finding the Fourth Proportional to 28,539.09, 42,801.71 and 11,890.04

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Solution

The fourth proportional to 28,539.09, 42,801.71 and 11,890.04 is: 17,832.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.09 : 42,801.71 = 11,890.04 : x
  2. Step 2: Convert to fraction form
    28,539.09/42,801.71 = 11,890.04/x
  3. Step 3: Cross multiply
    28,539.09x = 42,801.71 × 11,890.04
  4. Step 4: Simplify right side
    28,539.09x = 508,913,936.96
  5. Step 5: Solve for x
    x = 508,913,936.96/28,539.09
  6. Step 6: Final answer
    x = 17,832.17

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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.