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Finding the Fourth Proportional to 17,315.92, 25,980.08 and 5,629.20

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Solution

The fourth proportional to 17,315.92, 25,980.08 and 5,629.20 is: 8,445.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,315.92 : 25,980.08 = 5,629.20 : x
  2. Step 2: Convert to fraction form
    17,315.92/25,980.08 = 5,629.20/x
  3. Step 3: Cross multiply
    17,315.92x = 25,980.08 × 5,629.20
  4. Step 4: Simplify right side
    17,315.92x = 146,247,066.34
  5. Step 5: Solve for x
    x = 146,247,066.34/17,315.92
  6. Step 6: Final answer
    x = 8,445.82

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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.