Home / 28,579.83-42,874.29-11,931.29

Finding the Fourth Proportional to 28,579.83, 42,874.29 and 11,931.29

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Solution

The fourth proportional to 28,579.83, 42,874.29 and 11,931.29 is: 17,898.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.83 : 42,874.29 = 11,931.29 : x
  2. Step 2: Convert to fraction form
    28,579.83/42,874.29 = 11,931.29/x
  3. Step 3: Cross multiply
    28,579.83x = 42,874.29 × 11,931.29
  4. Step 4: Simplify right side
    28,579.83x = 511,545,587.53
  5. Step 5: Solve for x
    x = 511,545,587.53/28,579.83
  6. Step 6: Final answer
    x = 17,898.83

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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.