Home / 14,188.72-21,284.49-5,431

Finding the Fourth Proportional to 14,188.72, 21,284.49 and 5,431

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Solution

The fourth proportional to 14,188.72, 21,284.49 and 5,431 is: 8,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,188.72 : 21,284.49 = 5,431 : x
  2. Step 2: Convert to fraction form
    14,188.72/21,284.49 = 5,431/x
  3. Step 3: Cross multiply
    14,188.72x = 21,284.49 × 5,431
  4. Step 4: Simplify right side
    14,188.72x = 115,596,065.19
  5. Step 5: Solve for x
    x = 115,596,065.19/14,188.72
  6. Step 6: Final answer
    x = 8,147.04

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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.