Home / 14,664.56-21,999.76-5,431.28

Finding the Fourth Proportional to 14,664.56, 21,999.76 and 5,431.28

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Solution

The fourth proportional to 14,664.56, 21,999.76 and 5,431.28 is: 8,148.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,664.56 : 21,999.76 = 5,431.28 : x
  2. Step 2: Convert to fraction form
    14,664.56/21,999.76 = 5,431.28/x
  3. Step 3: Cross multiply
    14,664.56x = 21,999.76 × 5,431.28
  4. Step 4: Simplify right side
    14,664.56x = 119,486,856.49
  5. Step 5: Solve for x
    x = 119,486,856.49/14,664.56
  6. Step 6: Final answer
    x = 8,148.00

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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.