Home / 13,088.28-19,629.66-4,321.20

Finding the Fourth Proportional to 13,088.28, 19,629.66 and 4,321.20

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Solution

The fourth proportional to 13,088.28, 19,629.66 and 4,321.20 is: 6,480.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,088.28 : 19,629.66 = 4,321.20 : x
  2. Step 2: Convert to fraction form
    13,088.28/19,629.66 = 4,321.20/x
  3. Step 3: Cross multiply
    13,088.28x = 19,629.66 × 4,321.20
  4. Step 4: Simplify right side
    13,088.28x = 84,823,686.79
  5. Step 5: Solve for x
    x = 84,823,686.79/13,088.28
  6. Step 6: Final answer
    x = 6,480.89

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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.