Home / 28,247.89-42,379.74-10,719.10

Finding the Fourth Proportional to 28,247.89, 42,379.74 and 10,719.10

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Solution

The fourth proportional to 28,247.89, 42,379.74 and 10,719.10 is: 16,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.89 : 42,379.74 = 10,719.10 : x
  2. Step 2: Convert to fraction form
    28,247.89/42,379.74 = 10,719.10/x
  3. Step 3: Cross multiply
    28,247.89x = 42,379.74 × 10,719.10
  4. Step 4: Simplify right side
    28,247.89x = 454,272,671.03
  5. Step 5: Solve for x
    x = 454,272,671.03/28,247.89
  6. Step 6: Final answer
    x = 16,081.65

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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.