Home / 14,259.72-21,389.59-3,871.47

Finding the Fourth Proportional to 14,259.72, 21,389.59 and 3,871.47

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Solution

The fourth proportional to 14,259.72, 21,389.59 and 3,871.47 is: 5,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,259.72 : 21,389.59 = 3,871.47 : x
  2. Step 2: Convert to fraction form
    14,259.72/21,389.59 = 3,871.47/x
  3. Step 3: Cross multiply
    14,259.72x = 21,389.59 × 3,871.47
  4. Step 4: Simplify right side
    14,259.72x = 82,809,156.00
  5. Step 5: Solve for x
    x = 82,809,156.00/14,259.72
  6. Step 6: Final answer
    x = 5,807.21

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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.