Home / 14,115.16-21,172.83-4,254.40

Finding the Fourth Proportional to 14,115.16, 21,172.83 and 4,254.40

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Solution

The fourth proportional to 14,115.16, 21,172.83 and 4,254.40 is: 6,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.16 : 21,172.83 = 4,254.40 : x
  2. Step 2: Convert to fraction form
    14,115.16/21,172.83 = 4,254.40/x
  3. Step 3: Cross multiply
    14,115.16x = 21,172.83 × 4,254.40
  4. Step 4: Simplify right side
    14,115.16x = 90,077,687.95
  5. Step 5: Solve for x
    x = 90,077,687.95/14,115.16
  6. Step 6: Final answer
    x = 6,381.63

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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.