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Finding the Fourth Proportional to 11,720.65, 17,579.08 and 4,328.59

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Solution

The fourth proportional to 11,720.65, 17,579.08 and 4,328.59 is: 6,492.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.65 : 17,579.08 = 4,328.59 : x
  2. Step 2: Convert to fraction form
    11,720.65/17,579.08 = 4,328.59/x
  3. Step 3: Cross multiply
    11,720.65x = 17,579.08 × 4,328.59
  4. Step 4: Simplify right side
    11,720.65x = 76,092,629.90
  5. Step 5: Solve for x
    x = 76,092,629.90/11,720.65
  6. Step 6: Final answer
    x = 6,492.19

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1.5x scale

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.